Turtle & Tortoise

Chelonian sedation and anesthesia—A retrospective assessment of protocols, outcomes, and challenges in 250 cases (2000–2023)

Objective: To assess the anesthetic events of chelonians at a university hospital, identify shortcomings with record-keeping, and evaluate anesthesia-related mortality. Methods: This retrospective study evaluated medical records of sedated or anesthetized chelonians between March 2000 and October 2023. Anesthetic parameters...

Year Published: 2026Topics: Anesthesia & SedationAnimal Type: Reptile, Turtle & Tortoise

Citation: Thorbrogger, C. J., Rasys, A. M., Gise, B. T. et al. 2026. Chelonian sedation and anesthesia—A retrospective assessment of protocols, outcomes, and challenges in 250 cases (2000–2023). Journal of the American Veterinary Medical Association 264(2)

Effects of feeding graded levels of gelatin content on growth, feed utilization and health status in head-started leatherback sea turtles (Dermochelys coriacea)

Leatherback sea turtles (Dermochelys coriacea) have been successfully housed in captive conditions for over 1 year while receiving a gelatin-based artificial diet. However, the levels of gelatin in the feed formulations for this species were not optimized. Here, 2-month-old juvenile...

Year Published: 2025Topics: Husbandry & ManagementAnimal Type: Reptile, Turtle & Tortoise

Citation: Kanghae, H., Boonthong, S., Foong, D. S. et al. 2025. Effects of feeding graded levels of gelatin content on growth, feed utilization and health status in head-started leatherback sea turtles (Dermochelys coriacea). Zoo Biology 44(6), 631–643.

Laying the groundwork for reptile welfare assessment in zoos and private keeping: A literature-based proposal

With the increasing number and diversity of reptile species kept in zoological facilities and households, their welfare in captivity warrants structured and consistent evaluation. However, focused research on reptile welfare remains limited within the broader field of animal welfare science....

Year Published: 2025Topics: Welfare AssessmentAnimal Type: Crocodile & Alligator, Lizard, Reptile, Snake, Turtle & Tortoise

Citation: Yeh, H.-M., Huang, C.-C., Chiang, Y.-W. 2025. Laying the groundwork for reptile welfare assessment in zoos and private keeping: A literature-based proposal. Animal Welfare 34, e70.

Evidence of mood states in reptiles

There is increasing evidence that non-human animals experience ‘free-floating’ mood states, but such evidence is lacking in reptiles, hindering the debate as to their affective capacity and with subsequent implications for welfare. Here, we investigated the presence of a mood...

Year Published: 2025Topics: Emotion, Pain, & SentienceAnimal Type: Reptile, Turtle & Tortoise

Citation: Hoehfurtner, T., Wilkinson, A., Moszuti, S. A. et al. 2025. Evidence of mood states in reptiles. Animal Cognition 28(1), 52.

Towards more compassionate wildlife research through the 3Rs principles: Moving from invasive to noninvasive methods

Research in ecology and wildlife biology remains crucial for increasing our knowledge and improving species management and conservation in the midst of the current biodiversity crisis. However, obtaining information on population status often involves invasive sampling of a certain number...

Year Published: 2020Topics: Biological Sampling & Physiological Measurement, Identification Method, RestraintAnimal Type: All/General, Amphibian, Crocodile & Alligator, Fish, Frog & Toad, Lizard, Nonhuman Primate, Other Animal, Other Fish, Reptile, Salamander, Snake, Turtle & Tortoise

Citation: Zemanova, M. A. 2020. Towards more compassionate wildlife research through the 3Rs principles: Moving from invasive to noninvasive methods. Wildlife Biology 2020(1), no page numbers.

Assessment of hematologic and corticosterone response in free-living eastern box turtles (Terrapene carolina carolina) at capture and after handling

Hematology is a common tool for wildlife health assessments. Manual leukocyte counts are required in reptiles, however, disagreement between quantification methods has been observed in some chelonians. This study determined agreement between two methods of leukocyte quantification, eosinophilic leukopet, and...

Year Published: 2020Topics: Biological Sampling & Physiological Measurement, HandlingAnimal Type: Reptile, Turtle & Tortoise

Citation: Boers, K. L., Allender, M. C., Novak, L. J. et al. 2020. Assessment of hematologic and corticosterone response in free-living eastern box turtles (Terrapene carolina carolina) at capture and after handling. Zoo Biology 39(1), 13-22.

Tortoise Husbandry and Welfare

Keeping captive tortoises healthy and well is a significant challenge. Because they are ectotherms, these reptiles are totally dependent upon external sources to maintain body temperature and therefore metabolic function. Their physical environment is vital for them to remain healthy,...

Year Published: 2024Topics: Emotion, Pain, & Sentience, Husbandry & Management, Natural Behavior, Social Housing & Companionship, Welfare AssessmentAnimal Type: Reptile, Turtle & Tortoise

Citation: Williams, J. 2024. Tortoise Husbandry and Welfare. CABI, 303 pages.

Social dynamics and behavior of zoo-housed red-footed tortoises at different housing densities

Within zoos, it is common for animals that are considered solitary to be housed with conspecifics. This may be due to a variety of factors such as spatial constraints within zoos, difficulties associated with transferring animals, breeding goals, and/or other...

Year Published: 2025Topics: Stocking DensityAnimal Type: Reptile, Turtle & Tortoise

Citation: O’Brien, S. L., Diaz, A., Cronin, K. A. 2025. Social dynamics and behavior of zoo-housed red-footed tortoises at different housing densities. Behavioural Processes 231, 105242.

Quantification of sea turtle swimming patterns using a standardized arena to minimize effort in welfare assessment

Welfare assessment of captive sea turtles has become increasingly important as the need for lifelong care grows. The most valuable indicator of sea turtle welfare is behavioral assessment, as it is non-invasive and more cost-effective than other methods such as...

Year Published: 2025Topics: Welfare AssessmentAnimal Type: Reptile, Turtle & Tortoise

Citation: Inoue, N. K. 2025. Quantification of sea turtle swimming patterns using a standardized arena to minimize effort in welfare assessment. Behavioural Processes 231, 105200.

Putting the evidence into evidence-based husbandry: A scoping review of empirical approaches to improving captive reptile welfare

Non-avian reptiles are commonly kept in captivity, including zoos, aquariums, farms, laboratories, classrooms, rehabilitation centres, and homes. With this wide range of captive conditions and potential diversity of species housed, it is crucial to ensure that these animals are housed...

Year Published: 2025Topics: Environmental Enrichment, Housing, Human-Animal Interaction, Husbandry & Management, Social Housing & CompanionshipAnimal Type: Crocodile & Alligator, Lizard, Reptile, Snake, Turtle & Tortoise

Citation: Hanson, S. L., Whittaker, A. L., Cooper-Rogers, B. et al. 2025. Putting the evidence into evidence-based husbandry: A scoping review of empirical approaches to improving captive reptile welfare. Applied Animal Behaviour Science 292, 106831.