Taxonomy: Snake - LafeberVet

Article Video Webinar

Lighting is a critical component of animal husbandry, particularly for exotic animal species. View the webinar recording by Mark Mitchell, DVM, MS, PhD, DECZM (Herpetology), RACE approved for 1 credit hour. This presentation first reviews the role of ultraviolet B (UVB) radiation in vitamin D₃ synthesis, before summarizing experimental studies evaluating UVB exposure in reptiles, birds, and mammals. Additional topics include potential adverse effects associated with UVB light and practical clinical recommendations, such as methods for accurate measurement of UVB output as well as proper bulb selection and placement.

Quiz

The Therapeutic Techniques in Reptile Patients webinar was reviewed and approved by the American Association of Veterinary State Boards (AAVSB) Registry of Approved Continuing Education (RACE) program for 1 hour of continuing education credit for veterinarians and veterinary technicians in jurisdictions that recognize AAVSB RACE approval. You have three chances to take this post-test and pass. With a passing grade, you will see your results and a link to your continuing education certificate.

Article Video Webinar

Douglas Mader, MS, DVM, DABVP (Canine/Feline Practice), DABVP (Reptile/Amphibian Practice), DECZM (Herpetology) presented this live, interactive webinar. View the RACE-approved webinar recording, then take and pass the brief post-test to earn 1 continuing education credit. Effective therapeutic management of reptile patients requires strict attention to the Preferred Optimal Temperature Zone (POTZ). Warming patients to their POTZ ensures predictable pharmacologic responses, as reptiles at ideal temperatures demonstrate significantly improved drug absorption and metabolism compared with hypothermic individuals. Hydration status and appropriate route selection also influence therapeutic success in reptile medicine. Various routes of drug and fluid administration are explored, from subcutaneous and intracoelomic to intramuscular, intravenous, and intraosseous routes of injection.

Quiz

The Clinical Pathology of Herptiles webinar was reviewed and approved by the American Association of Veterinary State Boards (AAVSB) Registry of Approved Continuing Education (RACE) program for 1 hour of continuing education credit for veterinarians and veterinary technicians in jurisdictions that recognize AAVSB RACE approval. You have three chances to take this post-test and pass. With a passing grade, you will see your results and a link to your continuing education certificate.

Article Video Webinar

J. Jill Heatley, MS, DVM, DABVP (Avian Practice, Reptile & Amphibian Practice), DACZM presented this live, interactive webinar. View the RACE-approved webinar recording, then take the brief quiz to earn 1 hour of continuing education credit. Clinicopathologic evaluation of reptiles and amphibians is useful for health assessment and monitoring. There are specific considerations when evaluating data from this taxonomic group, including sex, age, time of year/season, reproductive status, diet, captive versus wild, geographic location, methodology, and anticoagulant. In this informative webinar Dr. Heatley discussed hematology, biochemistry, and urinalysis features of reptiles and amphibians as well as the clinical relevance of test results.

Quiz

The “Respiratory Disease in Snakes” webinar was reviewed and approved by the American Association of Veterinary State Boards (AAVSB) Registry of Approved Continuing Education (RACE) program for 1 hour of continuing education credit in jurisdictions that recognize AAVSB RACE approval. You have three chances to take this post-test and pass. With a passing grade, you will see your results and a link to your continuing education certificate

Article Video Webinar

Lower respiratory tract disease is common in snakes, particularly larger species, such as boas and pythons. This RACE-approved webinar recording by Dr. Scott Stahl reviews key anatomical features relevant to respiratory health, factors that predispose snakes to respiratory issues, common etiologic agents, typical patient histories and physical examination findings, as well as essential diagnostic testing and effective case management strategies.

Client Education Handout

This educational handout on ultraviolet lighting in reptiles is a shorter version of the complete article authored by Dr. Frances M. Baines. This handout is supplemented by two appendices as well as sections that list further reading and online resources that can be included or excluded to best meet individual client needs.

Article

Full-spectrum lighting is essential for reptile health. Sunlight – whether natural or simulated in a vivarium – is a vital resource. For decades, the focus has been upon provision of the correct spectrum and intensity of ultraviolet-B (UVB), primarily to enable vitamin D3 synthesis in the skin. More recently, the importance of all wavelengths found in daylight – from full sunlight to dim light filtering through deep shade – is increasingly recognized. UVB, ultraviolet-A (UVA), visible light and short-wavelength infrared (IR-A) all play important roles. This article reviews the relationship between vitamin D and lighting before exploring general guidelines on UV lights as well as specific advice on choosing bulbs, including recommendations on lamps to avoid.

Article Video Webinar

View the RACE-approved recording of this live 1-hour webinar event, presented by Elizabeth M. Rush, DVM, DACZM. Radiographs are a simple, noninvasive diagnostic tool for reptiles and amphibians. Normal radiographic anatomy is reviewed in each taxonomic group, before some common pathological conditions are discussed.

Quiz

“The Critical Reptile Patient” was reviewed and approved by the American Association of Veterinary State Boards (AAVSB) Registry of Approved Continuing Education (RACE) program for 1 hour of continuing education, in jurisdictions that recognize AAVSB RACE approval. You have three chances to take this brief post-test and pass. Upon passing the quiz, you will view your results and a link for download of your continuing education certificate.

Article Quiz Video Webinar

View this webinar recording by Stacey Leonatti Wilkinson, DVM, DABVP (Reptile & Amphibian Practice), RACE-approved for 1 credit hour. A common misconception is that true emergencies in reptile medicine do not exist. While it is true that most emergencies are an acute manifestation of a chronic disease, by the time the owner notices a problem an emergency may exist. Some common, true, acute-onset emergencies include trauma, vomiting, prolapse, seizures, tremors, obstructive dystocia, and severe dyspnea. Proper triage is critical when treating exotic animal patients and a complete history is vital to help determine a list of differential diagnoses. A physical examination should be performed, but initially it may be only visual or extremely limited if the patient is unstable. Stabilization should be the priority; then additional tests or procedures can be performed once the patient is more stable.

Quiz

The “Herptile Handling & Restraint Teaching Module” was reviewed and approved by the American Association of Veterinary State Boards (AAVSB) Registry of Approved Continuing Education (RACE) program for 1/2 hour of continuing education credit, in jurisdictions that recognize AAVSB RACE approval. You have three chances to take this post-test and pass. With a passing grade, you will see your results and a link to your continuing education certificate.

Article Teaching Module

LafeberVet’s Herptile Handling Teaching Module is RACE-approved for both veterinarians and veterinary technicians. Upon completion of this learning aid, the participant will have a basic clinical understanding of handling and restraint for amphibians, lizards, snakes, and chelonians. This content can serve as a clinical refresher or a teaching aid. Complete the four components of this syllabus, then take the brief quiz to earn one half hour of continuing education credit.

Article Quiz Video Webinar

View the RACE-approved webinar recording presented by Javier Nevarez, DVM, PhD, DACZM, DECZM (Herpetology). The live event was an updated version of his 2016 presentation. Topics covered include recognizing signs of pain and discomfort, analgesics commonly used in reptiles, as well as balanced anesthetic protocols. Since a key component of successful anesthesia and analgesia is the ability to properly monitor the patient, essential monitoring parameters and equipment are also discussed. This presentation concludes with a review of respiratory stimulus in the reptile and anesthetic recovery.

La’Toya Latney, DVM, DECZM (ZHM), DABVP (Reptile & Amphibian Practice), CertAqV presented this talk for the University of Minnesota College of Veterinary Medicine Zoo, Exotics, Aquatics & Wildlife Medicine Club as part of the Lafeber Company Student Program. Reptile nutrition is a growing field. Despite the large amount of biological data known about reptiles, there is much less known about how these species process the foods offered in captivity. This non-interactive webinar recording reviews what we know about reptile nutrition, including the nutritional strategies utilized as well as the comparative analysis of commonly fed vegetables and insects. The basic components of reptile nutrition will also be explored, from metabolizable energy, protein, and fat, to vitamins and minerals. Food preparation is then discussed in detail. Depending on the source, this process can be quite confusing, however, there are measures that can be taken to manipulate the nutritive profile of feeder insects.

Quiz

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Article Teaching Module

Hematology and biochemistry results serve as an important part of the minimum database for all veterinary patients. Use three videos on blood collection in lizards, snakes, and chelonians (or text with still images) plus one slideshow on general principles to better understand reptile venipuncture and to improve your ability to obtain a clinically useful sample. This teaching module is approved for 1 hour of continuing credit for veterinarians and veterinary technicians by the American Association of Veterinary State Boards Registry of Approved Continuing Education.

Article Video

Proper patient handling, blood collection technique and sample handling are all critical for accurate interpretation of hematology and biochemistry in all patients, including snakes. Use the video or text with still images to review equipment needed as well as the potential complications and proper approach to the ventral coccygeal vein and the heart, the two most common venipuncture sites in the snake.

Article Client Education Handout Video Webinar

Dr. Thomas Boyer presented this live, interactive webinar. The RACE-approved recording discusses nutrition, the leading cause of disease in reptiles and amphibians. Chronic nutritional diseases remain common, including nutritional secondary hyperparathyroidism, hepatic lipidosis, protein deficiency, hypovitaminosis A, hypervitaminosis A, pyramidal shell growth, renal disease, urocystoliths, thiamine deficiency, vitamin E/selenium deficiency, steatitis, corneal lipidosis, and obesity. The goal of this web-based seminar is to educate veterinary health professionals such that they can provide sound nutritional advice to reptile and amphibian keepers. Dr. Boyer has also shared his client education handout on growing mealworms and superworms.

Form-Questionnaire

Materials required for a complete necropsy include a necropsy protocol and necropsy form, as well as personal protective equipment, sampling and measurement tools, and collection containers. Download a PDF of this Snake Necropsy Data Collection Form and Checklist, or modify the Word document for use by your veterinary hospital.

Article Video

A dedicated anesthetist should be assigned to monitor every patient during the perianesthetic period. The anesthetist is fundamental to patient safety because she assures the patient is not aware, not moving, and not in pain, all while maintaining stable anesthetic depth. A deep plane of anesthesia can lead to hypoventilation and hypoxemia, reduced cardiac output, hypotension, inadequate tissue perfusion, central nervous system (CNS) depression, and prolonged recovery. This review article first explores the stages of anesthesia and then discusses assessment of anesthetic depth in exotic companion mammals, birds, and reptiles.

Article

The postmortem exam is a key diagnostic tool in understanding the reasons for a snake’s morbidity and mortality. Necropsies can provide valuable information to provide a risk assessment for other animals in a population or collection and can help provide closure for a grieving owner. This manuscript reviews the snake necropsy in a systemic, thorough manner, describing normal anatomy and proper collection technique from head to tail.

Article

According to LitCovid, an open-resource literature hub developed with the support of the US National Institute of Health, over 14,000 relevant articles have been posted to PubMed on the 2019 novel coronavirus. Thousands more articles are available as pre-prints. Obviously this explosion of information can be intimidating for the busy veterinarian, but you can use the national and international resources (listed in Table) to stay current on the latest information. Then turn to this review article and our supplemental LafeberVet Literature Search as well as LafeberVet’s Coronavirus in Animals and Determinants of Viral Infectionto dive a bit deeper into our evolving knowledge of SARS-CoV-2.

Article Case Study Webinar

“The question is not, can they reason? Nor, can they talk? But, can they suffer?” –Jeremy Bentham, philosopher, 1780

Dr. Renée Schott presented a live, interactive webinar on reptile wildlife euthanasia techniques. View the RACE-approved webinar recording today. Wildlife often present to veterinarians and wildlife rehabilitators with conditions that warrant euthanasia. It can be difficult, however, to apply mammalian methods of euthanasia to species with unique physiology such as reptiles. This presentation uses cases to discuss practical euthanasia methods for reptiles and the physiology behind these methods. Emphasis is placed on freshwater turtles as these represent some physiological extremes.

Article

Snakes are members of the class Reptilia, order Squamata, and suborder Serpentes. There are over 3,500 species of snakes in the world, however, for the most part, the anatomy of the snake is consistent across species.

Snakes have a long narrow body adapted for crawling and their internal anatomy has evolved to fit into a long narrow tube. It is possible to divide this tube into four quadrants (Fig 1). Although the sequence of organs is the same for all species, the relative position and size of the viscera can vary significantly between and within families. The quadrant system can be useful in developing a general understanding of organ location. This knowledge can be beneficial in diagnostics and treatment, such as identifying an area from which to make a surgical approach for a specific organ system.

Article

Introduction

Over 14,000 articles have been posted to PubMed on the 2019 novel coronavirus, known as SARS-CoV-2. Thousands more articles are available as pre-prints. Obviously this explosion of information can be intimidating for the busy veterinarian, but you can use the resources listed in Table 1 to stay current on the latest information. Then turn to […]

Article Video Webinar

Reptile reproduction can be a confusing topic due to the variety of normal reproductive strategies found throughout different reptile species. Nevertheless it important to understand normal reproductive processes to correctly approach some commonly seen problems. This webinar recording reviews normal reproductive strategies of reptiles, including important reproductive anatomy and physiology. Three clinically important conditions, pre-ovulatory or follicular stasis, post-ovulatory dystocia, and cloacal prolapse, are also explored in detail.

Slideshow Video

Hematology and biochemistry results serve as an important part of the minimum database for all veterinary patients. Although collection of blood samples can be a clinical challenge in reptiles, the method of patient handling, blood collection and sampling techniques are all critical for proper interpretation of laboratory results. This brief video or slideshow with still images reviews the basic principles of reptile venipuncture that should be considered before, during, and after the procedure.

Article

Even the most steadfast and seasoned veterinary anesthetist can find themselves intimidated by exotic animal patients. Standard veterinary anesthesia monitors are not designed to read the extremely high (or extremely low) heart rates and respiratory rates of some exotic animal patients. Despite these challenges, valuable information can be gathered from monitoring tools as well as hands-on techniques. Essential vital signs, such as heart rate and rhythm, respiratory rate and depth, body temperature, and mucous membrane color should all be evaluated.

Article

Electrocardiography can be used to detect and diagnose arrhythmias and conduction abnormalities, particularly during long-term anesthesia. How are leads attached to exotic animal patients? And what is the normal appearance of normal electrocardiogram tracings in birds or reptiles?

Article

Reptile dentition tends to be relatively uniform with a simple, conical shape. Most reptile teeth are loosely attached with the dental attachment most superficial in acrodontic species. Tooth loss and replacement is a normal occurrence in reptile species with pleurodont dentition, which includes snakes, and many lizards. Take special care when handling reptiles with acrodont dentition as teeth will not be replaced when infected or fractured. Additionally, periodontal disease is common in captive lizards with acrodont dentition such as bearded dragons and chameleons. Periodontal disease is an insidious condition. As plaque formation builds and gingivitis worsens, many reptiles will continue to eat. The owner may not observe problems until disease is quite advanced. Feeding lizards an unnatural, soft diet is believed to promote plaque development and the development of periodontal disease.

Article Video

Veterinary practices are often more hesitant to deal with snakes than with other pet reptiles, yet for the most part snakes are probably the easiest reptile patients to capture and restrain in clinical practice. This article reviews the defense mechanisms of snakes as well as transport, restraint techniques, and potential complications.

Article

Reptiles lack an epiglottis and the glottis is ready visualized, making intubation readily accomplished in most species. If the glottal folds are closed, apply topical lidocaine to facilitate intubation. The tracheal rings are complete in reptiles. Use of an inflated, cuffed endotracheal tube can lead to pressure necrosis because there is no elastic ligament to accommodate tracheal expansion. Always select an uncuffed endotracheal tube in small reptiles and never inflate a cuff in large reptiles …

Article

Depending on their age and size, snakes may be fed multiple times in one week or every 2 to 4 weeks. If nutritional support is truly needed, then assisted feeding is indicated in the hospitalized snake. Tube feeding is commonly performed in critically ill snakes after fluid therapy and supplemental heat is provided.

Article Presenting Problem

Respiratory tract disease is common in captive snakes. Pneumonia and/or tracheitis are typically caused by opportunistic Gram-negative bacterial infections that are allowed to take hold due to poor husbandry practices. Disease is often unapparent to the owner until the problem is quite advanced and open-mouth breathing is observed. This presenting problem article explores key points of urgent care as well as general principles of case management.

Article Presenting Problem

Primarily a disease of captive reptiles, dysecdysis is sporadically seen in free-ranging reptiles. Among captive reptiles, difficult sheds are most common in those with a complete shedding cycle: snakes and some geckos such as the leopard gecko and African fat-tailed gecko. Some skinks with relatively tiny digits, are prone to retaining shed skin on the digits.

Article

Snake behavior will vary with the species, however the normal snake tends to be alert, responsive, and curious. Frequent tongue flicking is a sensory gathering behavior used to deliver scents to the vomeronasal organ. The normal snake is generally active, often coiling or twining its body. This is particularly true for smaller species. Signs of aggression in the snake may include…

Article

Most reptiles are asymptomatic carriers of Salmonella spp., which can be spread through direct or indirect contact with the reptile or its droppings. This brief zoonotic concern article asks: How is Salmonella transmitted to humans? Who is most at risk? What are the signs of salmonellosis in human patients? And how can reptile-associated salmonellosis be prevented?

Article Presenting Problem

Thermal burns are a common injury in snakes and lizards. Companion snakes and lizards may come in contact with poorly protected heat sources or old “hot rocks” that short circuit. Even free-ranging reptiles may be at risk for thermal injuries during grass or forest fires. This presenting problem article “Burns in Snakes and Lizards”, explores a basic understanding of burns in reptiles, then moves onto key points of urgent care as well as general aspects of case management, including patient history, physical examination, differential diagnoses, diagnostics, therapy, and finally prognosis.

Article

The basic principles of fluid therapy are the same in the reptile as seen in birds and mammals, however reptile anatomy and physiology make some features of this crucial supportive care procedure unique. This article reviews fluid resuscitation with the use of crystalloid fluids and colloids, indications for replacement fluids including signs of dehydration and osmolarity values reported in reptiles. Routes of fluid administration in reptiles are described include subcutaneous, oral, soaking, intracoelomic, intraosseous, and intravenous via the cephalic vein, jugular vein, and in rare instances intracardiac catheter placement. Patient monitoring, including blood pressure measurement and signs of overhydration, are also explored.

Article

The paired ovaries and testes, which range in color from yellow to grayish-pink, are located dorsomedially within the coelom although their exact location is species-specific. The right gonad sits cranial to the left, particularly in snakes. Females possess a right and left oviduct, but no true uterus. The oviduct empties directly into the cloaca through a genital papillae

Article

Among exotic animals, venous cutdown is most commonly employed in reptiles like lizards and snakes although intraosseous catheters are also placed in lizards. Similarly, when an exotic companion mammal like a ferret or rabbit suffers from severe hypovolemia, dehydration, hypotension, and vascular collapse, intraosseous catheters have largely replaced venous cutdowns but this technique is occasionally employed.

Article

Common reproductive conditions of the reptile include prolapse of the cloaca, oviduct or copulatory organ, yolk coelomitis, dystocia or egg binding, as well as follicular stasis. This review article on twelve key facts explores clinically relevant anatomy and physiology and appropriate husbandry as well as key points of urgent care and general principles of case management.

Article Presenting Problem

Prolapse in reptiles can involve the cloaca, a common receiving chamber for the reproductive, urinary, and gastrointestinal tracts. Prolapses can also originate from the distal gastrointestinal tract, reproductive organ, or urinary bladder—in those species with a bladder like the green iguana and leopard gecko…

Article Presenting Problem

Like other shedding problems, retained spectacles or “eye caps” are a sign of an underlying problem related to patient health or husbandry. If retained spectacles are not removed, they can interfere with vision, damage the eye, and/or serve as a source of infection

Client Education Handout

According to the Humane Society of the United States,17 deaths and many more injuries have been related to large constrictors since 1978. Given the tens of thousands of large constrictors sold, the incidence of fatalities and injuries is relatively low, however every incident—including the death of four babies in their cribs and three additional children—is particularly tragic since these cases are completely preventable. In this client education handout, safety tips involving snake feeding, housing, and behavior are discussed.

Information sheet

There are several species of kingsnake and their habitat and range vary. The Eastern kingsnake is found in humid forests of the eastern seaboard states and as far west as the Appalachians and Alabama. The California kingsnake is native to desert, arid grassland, and rocky hillsides of Baja Mexico and the western United States. Pets may be bred in captivity or wild-caught. Kingsnakes are fairly docile, medium-sized, hardy reptiles, that make…

Information sheet

The corn snake is also known as the red rat snake. Corn snakes are found in woodland and forest regions of the southeastern and central United States as far west as Kentucky and Louisiana and as far south as Mexico. Pets may be wild-caught but most are captive bred and many color morphs are now available in the pet trade.

Information sheet

The group of snakes called “boas” consists of over 40 species. Most popular pet boas are New World species, however boas are also found in Africa and Asia. Most boas live in environments that range from tropical rain forest to dry woodland and scrub forest. Sand boas (Gongylophis spp.) may be found in desert and savannah land and Rosy boas (Lichanura spp.) live in dry, rocky habitats.

Pythons are found in Africa, Australia, and Asia under conditions that range from rain forest to desert. Some species are primarily ground dwellers, but most can be found in bushes and trees. The larger species are often found near water and are strong swimmers.

Pet boas and pythons may be…

Article Quiz

October 21st is Reptile Awareness Day. Although Reptile Awareness Day was founded with the worthy goal of exploring the ecological challenges that reptiles face, celebrate with LafeberVet by taking our quiz that focuses on clinical information. Are you aware of these reptile-centric facts that will benefit you, your staff, and of course your reptile patients?

Client Education Handout

“Simply having a reptile in the household increases the risk of Salmonella spp. infection”. Learn who is most at risk and what you can do to minimize your family’s risk of contracting disease.

Article

Due to their unique anatomy, physiology, and behavior, critically ill reptiles pose special challenges. Fortunately there are a host of tips and tricks that can increase clinical success in an intensive care setting… This Exotic ICU article is part of a series exploring nursing care of special species.

A collection of online resources related to reptile and amphibian medicine. This list of links come from a variety of professional organizations and conservation websites.

Article

Are you prepared to see herptiles in your clinical practice? This equipment list, created by a veterinarian board-certified in reptiles and amphibians, provides recommendations for basic equipment needs as well as tools for advanced reptile care including amphibians and even crocodilians.

Article Video

Fluid therapy is an important part of supportive care, and there are several routes available for fluid support in the reptile. Subcutaneous and/or oral fluids are appropriate for mild to moderate dehydration, while intracoelomic, intravenous, or intraosseous fluids are administered to critically ill reptiles or to patients with moderate to severe dehydration.

Article Presenting Problem

Stomatitis, also known as “mouth rot”, ulcerative stomatitis, necrotic stomatitis, and/or periodontal disease is a common problem in snakes and lizards. Stomatitis is less common in chelonians and crocodilians, and often presents as a stomatitis-rhinitis complex in tortoises. This presenting problem article explores the pertinent anatomy involved, key points of urgent care, as well as tips for case management.

Article Video

Reptile owners are routinely instructed on oral or intramuscular drug administration techniques for outpatient care. In many instances and in many species, parenteral injections are preferred over the oral route. Injectable medications can be delivered intramuscularly, subcutaneously, intracoelomically, intravenously, or…

Article Video

Nutritional support is indicated in reptiles with a 10% drop in body weight, and force-feeding is sometimes indicated with a history of anorexia. Interpretation of anorexia can be difficult in some reptiles, particularly snakes and chelonians. Never rush to feed a reptile. The patient must first be warm, housed at its preferred optimal temperature zone, and must be adequately hydrated.

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