Sergio Guerrero Sánchez

Sergio Guerrero Sánchez
Wildlife Veterinarian

In 2012, Sergio Guerrero Sánchez arrived at Sabah, Malaysia, invited by Benoit Goossens to assist as Veterinarian for the Sun bear (Helarctus malayus) project for three months. After that period they agreed terms of a longer stay at DGFC working as wildlife vet and to boost his personal and professional experience. Sergio, thus, became the Wildlife Veterinarian Officer based at DGFC where he’s involved in most of the projects that need a veterinarian for anesthesia, sampling or welfare supervision, especially the Small Carnivores Project, the Kinabatangan Clouded Leopard Project, and the MONKEYBAR Project. He’s in charge of post mortems and of the rescue of injured animals found within the DGFC’s influence area. In April 2013 he started the Biawak (monitor lizard) project, which in 2014 became his PhD research project at Cardiff University. In April 2019, the Health at the Edge Project was launched, and he leads it together with Liesbeth. His work as a field veterinarian at DGFC allowed him to understand the dynamics of animal communities within an oil palm dominated landscape, and the role that domestic animals may have in the ecology of certain pathogens and the risk to wildlife.

Sergio is a veterinarian graduated from the Universidad Veracruzana (Veracruz, Mexico, 1998) and a Master in Science in Natural Resources and Rural development by El Colegio de la Frontera Sur (Campeche, Mexico, 2011). His experience on in situ and ex situ wildlife management and conservation started while working at the Zoológico Miguel Álvares del Toro (ZooMAT) at Chiapas, Mexico, focusing on conservation of neo-tropical wildlife. Sergio’s work focuses on disease ecology, wildlife populations’ health and conservation medicine with an emphasis on human-wildlife interphase effects. He has collaborated with and attended national and international training workshops on exotic disease surveillance, control and eradication.

Sergio has also worked on three projects focusing on zoonotic and anthropogenic diseases in buffer areas of Natural Reserves located in Chiapas and Campeche, Mexico. Aware of the importance of human activities as factors in biodiversity conservation and how social and environmental welfare are linked, h performed some work in ethno-veterinarian issues, focusing in the traditional knowledge system on domestic animals health and welfare. Sergio worked as an external collaborator of an interdisciplinary project on the enrichment of rural home gardens and poultry health, to be incorporated in the management and conservation of the Grijalva River’s Basin in Tabasco and Chiapas, southern Mexico.

Born in Mexico City and raised under the traditional Mexican family principles, his path has been influenced by several people (all friends) and circumstances throughout more than 30 years. Sergio’s life has been driven by service and empathy, always trying to change the impossible into just difficult and work and live with passion and wisdom.


Cardiff University, 2020. PhD on the “ Ecology and Health of the Asian water monitor lizard (Varanus salvator) in the fragmented landscape of the Kinabatangan Floodplain, Sabah, Malaysia (588 downloads)


Nájera, F.; Hearn, A. J.; Ross, J.; Ramírez Saldivar, D. A.; Evans, M. N.; Guerrero-Sánchez, S.; Nathan, S. K. S. S.; De Gaspar Simón, I.; Macdonald, D. W.; Goossens, B.; Revuelta Rueda, L. 2017. Chemical immobilization of free-ranging and captive Sunda clouded leopards (Neofelis diardi) with two anesthetic protocols: medetomidine-ketamine and tiletamine-zolazepam. J. Vet. Med. Sci., 79, 1892–1898

Evans, M.N., Guerrero-Sanchez, S., Bakar, M.S.A., Kille, P., Goossens, B. (2016). First known satellite collaring of a viverrid species: preliminary performance and implications of GPS tracking Malay civets (Viverra tangalunga). Ecological Research, 31(3): 475-481