An unpleasant encounter: non-fatal attack by the broad-snouted caiman, Caiman latirostris, on a human in Minas Gerais, Brazil

Authors

  • André Yves Author
  • Maria Olivia Dourado Sanna Author
  • Laura Fonseca Martins Author
  • Guilherme Vitor Benfica Duarte Author
  • Luís Antônio Bochetti Bassetti Author
  • Thiago Simon Marques Author

DOI:

https://doi.org/10.5281/zenodo.19046873

Keywords:

Crocodilians, defensive behavior, ethnozoology, human-wildlife conflict

Abstract

Human–crocodilian interactions provide important information to guide conservation and public safety strategies. Although attacks on humans are rare, most are interpreted as defensive responses. We report a non-fatal attack by Caiman latirostris in Jaboticatubas, Minas Gerais, Brazil. During a swimming training, the victim was attacked without prior visual detection of the animal. The event involved one bite to the trunk, followed by lateral head movements and contact with hind limbs and tail. After the victim’s defensive reaction, the animal released her, following her for approximately 50 m at the surface. Injuries included thoracic punctures and lacerations, abrasions on the lower limbs, and an axillary wound. The pattern of the marks suggests an individual approximately 150 cm. The characteristics of the incident are consistent with a defensive behavior hypothesis, possibly related to territorial defense. Records like this are relevant to understanding the contexts of these interactions and guiding management and prevention strategies.

   

Author Biographies

  • André Yves

    André Y. is a Bachelor’s degree in Biological Sciences from the Federal University of Juiz de Fora (UFJF) and a Master’s in Ecology from the National Institute of Amazonian Research (INPA). Conducts research on the ecology and evolution of Neotropical herpetofauna. Frequently works with decision-makers on topics related to biodiversity. Since 2019, has been a member of the Species Survival Commission (SSC) and the Crocodile Specialist Group (CSG) within IUCN.

  • Maria Olivia Dourado Sanna

    Maria Olívia D. S. is a Bachelor’s degree in Biological Sciences and Master’s in Entomology from the Federal University of Viçosa (UFV). Works as an environmental consultant and herpetologist at Sustentare Environmental Services, with experience in rescue, survey, and monitoring of fauna, especially herpetofauna.

  • Laura Fonseca Martins

    Laura F. M. is a Graduating in Biological Sciences from PUC Minas. Has a primary interest in the area of conservation and behavior of crocodilians, especially Brazilian caimans. Has experience with handling and rehabilitating wild animals, and has also worked on a conservation project for Atlantic Forest caimans, gaining field skills and environmental education experience. Conducts work with monitoring populations of broad-snouted caimans at the Rio Doce State Park. Has experience in maintaining scientific collections and is a member of the Mammalogy Laboratory at the Museum of Natural Sciences of PUC Minas.

  • Guilherme Vitor Benfica Duarte

    Guilherme Vitor B. D. is a Family and community medical doctor for 12 years in Serra do Cipó, endurance athlete, passionate about animals. Since 2024, he has been voluntarily conducting wildlife monitoring in the Serra do Cipó region through occasional recordings and camera traps.

  • Luís Antônio Bochetti Bassetti

    Luís Antônio B. B. is a Veterinary Doctor from the University of Alfenas (UNIFENAS), Master’s in Agroecosystem Ecology from the University of São Paulo (USP), PhD in Applied Ecology from the University of São Paulo (USP). Regional Vice-Director of the Crocodile Specialist Group (CSG/SSC/IUCN). Delegate of IUCN at the Conference of the Parties of CITES (CoP19), in Panama City, Panama. Consultant for decision-making in crocodilian conservation and status with official agencies in Brazil and abroad. Conducts research on ecology, conservation, health status, and management of crocodilians.

  • Thiago Simon Marques

    Thiago Simon M. is a Bachelor’s degree in Biological Sciences and Ph.D. in Applied Ecology from the University of São Paulo (USP), and currently an Adjunct Professor II at the University of Sorocaba (UNISO). Coordinator of the Applied Ecology Laboratory and advisor in the graduate program in Technological and Environmental Processes at UNISO. Conducts research on ecology, conservation, and management of vertebrates. Member of the Species Survival Commission (SSC), the Crocodile Specialist Group (CSG), and the Tortoise and Freshwater Turtle Specialist Group (TFTSG) within IUCN.

References

Bassetti L.A., Bataus,Y.S.L., Rodrigues J., Uhlig V.M., Andrade T.A., Coutinho M.E., Farias I.P., Magnusson W.E., Valadão R.M. Campos, Z. 2023. Caiman latirostris. Sistema de Avaliação do Risco de Extinção da Biodiversidade.

Bitencourt M.M., Maschio G.F. 2023. Incidence and characteristics of crocodilian incidents on humans in Brazil in the period 2000–2022. Herpetological Journal, 33: 76–82. doi: https://doi.org/10.33256/33.3.7682. DOI: https://doi.org/10.33256/33.3.7682

Borteiro C., Gutiérrez F., Tedros M., Kolenc F. 2009. Food habits of the broad-snouted caiman (Caiman latirostris: Crocodylia, Alligatoridae) in northwestern Uruguay. Studies on Neotropical Fauna and Environment, 44(1), 31–36. doi: 10.5216/rbn.v19iesp.73832 DOI: https://doi.org/10.1080/01650520802507572

Borteiro C., Gutiérrez F., Tedros M., Kolenc F., Verdade L.M. 2022. Capture methods of Caiman latirostris Daudin, 1802 (Crocodylia, Alligatoridae) in northern Uruguay, with notes of defensive and feeding behaviours. Revista de Biologia Neotropical/Journal of Neotropical Biology, 19(esp), 153-164. DOI: https://doi.org/10.5216/rbn.v19iesp.73832

Caldicott D.G., Croser D., Manolis, C., Webb G., Britton A. 2005. Crocodile attack in Australia: an analysis of its incidence and review of the pathology and management of crocodilian attacks in general. Wilderness & Environmental Medicine, 16:143–159. doi: 10.1580/1080-6032(2005)16[143:caiaaa]2.0.co;2. DOI: https://doi.org/10.1580/1080-6032(2005)16[143:CAIAAA]2.0.CO;2

Campos Neto M.F., Stolf H.O., Haddad Junior V. 2013. Ataque de jacaré a pescador no Pantanal de Mato Grosso (Brasil): relato de caso. Diagnóstico & Tratamento, 8(1):21-3. Available on: https://docs.bvsalud.org/upload/S/1413-9979/2013/v18n1/a3437.pdf

Cavalier R., Pratt E.N., Serenari C., Rubino E.C. 2022. Human dimensions of crocodilians: a review of the drivers of coexistence. Human Dimensions of Wildlife, 27(4): 380–396. doi:10.1080/10871209.2021.1953195 DOI: https://doi.org/10.1080/10871209.2021.1953195

CrocAttack. 2026. Worldwide Crocodilian Attacks Database. Available on: https://crocattack.org/. Acesso em: 11 fev. 2026.

Diefenbach C. 1988. Thermal and feeding relations of Caiman latirostris (Crocodylia: Reptilia). Comparative Biochemistry and Physiology, 88A: 149–155. DOI: https://doi.org/10.1016/0300-9629(88)91072-9

Haddad Jr V., Fonseca W.C. 2011. A fatal attack on a child by a black caiman (Melanosuchus niger). Wilderness & environmental medicine, 22(1): 62-64. DOI: https://doi.org/10.1016/j.wem.2010.11.010

Marques T.S., Bassetti L.A.B., Lara N.R.F., Millan C.H., Piña C.I., Verdade L.M. 2016. Population structure of the broad-snouted caiman (Caiman latirostris) in natural and man-made water bodies associated with a silvicultural landscape. Salamandra, 52(1):1–10.

Mascarenhas-Junior P., Maffei F., Muniz F., Freitas-Filho R., Portelinha T., Campos Z., Bassetti L. 2021. Conflicts between humans and crocodilians in urban areas across Brazil: a new approach to inform management and conservation. Ethnobiology and Conservation, 10:1–13. doi:10.15451/ec2021-12-10.37-1-19. DOI: https://doi.org/10.15451/ec2021-12-10.37-1-19

Pontes J.A.L., Duque B.R., Dos Santos D.C. 2025. Primeiro registro de ataque de Caiman latirostris (Daudin, 1801 “1802”) em unidade de conservação da natureza no município do Rio de Janeiro, sudeste do Brasil. Anais do Uso Público em Unidades de Conservação, 13(18):30-38. doi:10.47977/2318-2148.2025.v13n18p30 DOI: https://doi.org/10.47977/2318-2148.2025.v13n18p30

Pooley S., Siroski P.A., Fernandez L., Sideleau B., Ponce-Campos P. 2021. Human–crocodilian interactions in Latin America and the Caribbean region. Conservation Science and Practice, 3:e351. doi:10.1111/csp2.351 DOI: https://doi.org/10.1111/csp2.351

Pooley S. 2024. Croc Digest: A bibliography of human-crocodile conflict research and reports, 5th ed. (London: Simon Pooley). Available on: https://www.iucncsg.org/365_docs/attachments/protarea/c0663c1622146670467fbb59e9b924ca.pdf

Ribeiro J.F., Walter B.M.T. 2008. As Principais fitofisionomias do bioma Cerrado. In: Sano, Shizuo Y.; Almeida, Sérgio P.; Ribeiro, José Felipe (eds.), Cerrado: ecologia e flora. Brasília: Embrapa.

Siroski P., Bassetti L.A.B., Piña C., Larriera A. 2020. Caiman latirostris. The IUCN Red List of Threatened Species 2020: e.T46585A3009813. doi: 10.2305/IUCN.UK.2020-3.RLTS.T46585A3009813.en DOI: https://doi.org/10.2305/IUCN.UK.2020-3.RLTS.T46585A3009813.en

Tarlé R.G., Haddad V. 2022. Broad-Snouted Caiman (Caiman latirostris) bite. Revista da Sociedade Brasileira de Medicina Tropical, 55, e0655-2021. doi: 10.1590/0037-8682-0655-2021 DOI: https://doi.org/10.1590/0037-8682-0655-2021

Yves A., Lima L.M.C., Bassetti L.A.B, Andrade M.B.B., Sousa B.M, Marques T.S. 2023. Distribution of broad-snouted caiman (Caiman latirostris) in the Rio Doce State Park, Minas Gerais, Brasil. North-Western Journal of Zoology, 19(2):167-172.

Downloads

Published

2026-06-08

How to Cite

YVES, André; DOURADO SANNA, Maria Olivia; FONSECA MARTINS, Laura; BENFICA DUARTE, Guilherme Vitor; BOCHETTI BASSETTI, Luís Antônio; SIMON MARQUES, Thiago. An unpleasant encounter: non-fatal attack by the broad-snouted caiman, Caiman latirostris, on a human in Minas Gerais, Brazil. Herpetologia Brasileira, [S. l.], v. 15, n. 1, 2026. DOI: 10.5281/zenodo.19046873. Disponível em: https://hb.sbherpetologia.org.br/index.php/hb/article/view/255. Acesso em: 15 jun. 2026.