Pete Oxford / Female Jaguar (Panthera onca) under anesthetic, having teeth measured as part of the collection of biometric data and physiological samples for a relocation project, captive, Fundacion Santa Martha Ce...

Doug Gimesy / Volunteer field assistant recording data from an anaesthetised platypus (Ornithorhynchus anatinus) as it starts to recover from the anesthetic. It was anaesthetised so a temporary radio transponder co...

Doug Gimesy / Researcher holding a Platypus (Ornithorhynchus anatinus) which is recovering from an in-field anesthetic. It was anaesthetised to allow a radio transponder to be glued to its tail - allowing researche...

David Perpinan / Anesthesia of a captive bamboo shark (Chiloscyllium plagiosum) Small repro only

Suzi Eszterhas / Koala (Phascolarctos cinereus), male sick with chlamydia on scale while under anaesthetic. Currumbin Wildlife Hospital, Queensland, Australia, captive.

Ann & Steve Toon / Wild elephant bull (Loxodonta africana), hoisted into position by crane for vasectomy operation in bush by the Elephant Population Management Program team with Dr Jeff Zuba, senior associate veterinar...

Pete Oxford / Jaguar (Panthera onca) close-up of fur showing pattern of a female under anesthetic having biometric data and physiological samples taken for a relocation project, captive, Fundacion Santa Martha Cent...

Pete Oxford / Female Jaguar (Panthera onca) under anesthetic having foot measured as part of the collection of biometric data and physiological samples for a relocation project, captive, Fundacion Santa Martha Cent...

Pete Oxford / Veterinarian Alexandra Blanco with female Jaguar (Panthera onca) under anesthetic having biometric data and physiological samples taken for a relocation project, captive, Fundacion Santa Martha Centro...

Pete Oxford / Jaguar (Panthera onca) paw of a female under anesthetic for the collection of biometric data and physiological samples for a relocation project, captive, Fundacion Santa Martha Centro de Rescate, Ecua...

Ann & Steve Toon / Wild elephant (Loxodonta africana), under anaesthetic while undergoing vasectomy carried out by Elephant Population Management Program veterinary team. Private game reserve in Limpopo, South Africa, A...

Ann & Steve Toon / Wild elephant (Loxodonta africana), under anaesthetic while undergoing vasectomy carried out by Elephant Population Management Program veterinary team. Private game reserve in Limpopo, South Africa, A...