Sergio Hanquet / Scientists performing Sperm whale (Physeter macrocephalus) calf necropsy on beach to determine cause of death, whale found drifting at sea. Tenerife, Canary Islands. 2010.

Sergio Hanquet / Sperm whale (Physeter macrocephalus) in net, hoisted in air prior to necropsy, man watching in foreground. Tenerife, Canary Islands, 2010.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) hoisted in air, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) washed up dead on beach, man standing in water looking at whale, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015...

Sergio Hanquet / Woman annotating illustrations of Sperm whale (Physeter macrocephalus) during necropsy of dead calf found drifting at sea. Tenerife, Canary Islands. 2010.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Weighing Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, as part of post mortem examination, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Measuring Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, as part of post mortem examination, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

SCOTLAND: The Big Picture / Photographing Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, as part of post mortem examination, National Museum of Scotland, Edinburgh, Scotland, UK, May 2...

SCOTLAND: The Big Picture / Post mortem examination of Scottish wildcat (Felis silvestris grampia), probably a Domestic cat (Felis catus) hybrid, National Museum of Scotland, Edinburgh, Scotland, UK, May 2016.

Suzi Eszterhas / Malayan Pangolin (Manis javanica) conservationist, Thai Van Nguyen, examining three month old baby, Carnivore and Pangolin Conservation Program, Cuc Phuong National Park, Vietnam, digitally removed ob...

Suzi Eszterhas / Malayan Pangolin (Manis javanica) conservationist, Thai Van Nguyen, examining three month old baby, Carnivore and Pangolin Conservation Program, Cuc Phuong National Park, Vietnam, digitally removed ob...

Suzi Eszterhas / Malayan Pangolin (Manis javanica) conservationist, Thai Van Nguyen, examining three month old baby, Carnivore and Pangolin Conservation Program, Cuc Phuong National Park, Vietnam, digitally removed ob...

Suzi Eszterhas / Malayan Pangolin (Manis javanica) conservationist, Thai Van Nguyen, examining three month old baby, Carnivore and Pangolin Conservation Program, Cuc Phuong National Park, Vietnam, digitally removed ob...

Sebastian Kennerknecht / Eurasian Badger (Meles meles) biologist, Michael Noonan, releasing female after medical examination, Wytham Woods, England, United Kingdom

Sebastian Kennerknecht / Eurasian Badger (Meles meles) biologist, Chris Newman, checking overall health of male while veterinarian takes down data, Wytham Woods, England, United Kingdom

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarians Mike Murray and Marissa Viens performing surgery on rescued otter as volunteers look on, Monterey Bay Aquarium, Monterey Bay, California

Lisa Hoffner / Veternarian Dave Wehdeking, performing health examination on wild Cotton-top tamarin (Saguinus oedipus) Colombia, South America. February 2008 IUCN List: Critically Endangered

Jane Burton / Vet examining 9-week Yellow Labrador Puppy before his primary vaccination. Listening to his heart and chest with a stethoscope

Jane Burton / Woman showing boy how to open a pup's mouth and look at its tongue and teeth

Jane Burton / Woman showing boy how to look at pups front paw

Jane Burton / Vet checking general condition of 9-week Yellow Labrador puppy before primary vaccination

Jane Burton / Vet checking ear of English Springer Spaniel bitch, Model released

Jane Burton / Examining the eye of English Springer Spaniel pup

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologists, Julie King and Rebekah Rudy, examining fox during vaccination and health check up, Santa Catalina Island, Channel Islands, Californ...

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, carrying fox during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, vaccinating fox against canine distemper virus, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologists, Julie King and Rebekah Rudy, examining teeth of fox during vaccination and health check up, Santa Catalina Island, Channel Islands,...

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, vaccinating fox against canine distemper virus, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, releasing fox after vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, looking for PIT tag in fox during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, carrying trapped fox during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologists, Julie King and Rebekah Rudy, examining fox during vaccination and health check up, Santa Catalina Island, Channel Islands, Californ...

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologists, Julie King and Rebekah Rudy, examining teeth of fox during vaccination and health check up, Santa Catalina Island, Channel Islands,...

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, examining fox during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, carrying fox during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, checking for ear mites during vaccination and health check up, Santa Catalina Island, Channel Islands, California

Sebastian Kennerknecht / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, carrying trapped fox during vaccination and health check up with Rebekah Rudy, Santa Catalina Island, Channel Islands, C...

Suzi Eszterhas / Common Gray Fox (Urocyon cinereoargenteus) veterinarian, Dan Famini, and rehabilitator, Danielle Mattos, with injured fox undergoing medical procedure, Sonoma County Wildlife Rescue, Petaluma, Califor...

Suzi Eszterhas / Mountain Lion (Puma concolor) veterinarian, Justin Williams, undergoing cardiology exam on two-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) veterinarian, Dan Famini, examining two-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) veterinarian, Dan Famini, examining two-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) veterinarian, Dan Famini, examining three-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) rehabilitator, Danielle Mattos, examining three-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) rehabilitator, Danielle Mattos, and veterinarian, Dan Famini, examining three-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Mountain Lion (Puma concolor) rehabilitator, Danielle Mattos, examining three-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, California

Suzi Eszterhas / Cheetah (Acinonyx jubatus) conservationist, Laurie Marker, examining rescued cheetah, Cheetah Conservation Fund, Namibia

Suzi Eszterhas / Cheetah (Acinonyx jubatus) conservationist, Laurie Marker, examining rescued cheetah, Cheetah Conservation Fund, Namibia

Suzi Eszterhas / Cheetah (Acinonyx jubatus) conservationist, Laurie Marker, examining rescued cheetah, Cheetah Conservation Fund, Namibia

Sebastian Kennerknecht / Eurasian Badger (Meles meles) biologist, Chris Newman, taking down data of cub during medical examination, Wytham Woods, England, United Kingdom

Sebastian Kennerknecht / Eurasian Badger (Meles meles) biologist, Kirstin Bilham, tattooing research id on male, Wytham Woods, England, United Kingdom

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarian Mike Murray performing surgery on rescued otter, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarian Mike Murray stitching up rescued otter after surgery, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarian Mike Murray performing surgery on rescued otter, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) being measured before undergoing surgery, Monterey Bay Aquarium, Monterey Bay, California

Sebastian Kennerknecht / Sea Otter (Enhydra lutris) veterinarians Mike Murray and Marissa Viens performing surgery on rescued otter, Monterey Bay Aquarium, Monterey Bay, California

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Sergio Hanquet / Veterinarian from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no a...

Sergio Hanquet / Veterinarians from the University Institute of Animal Health of the ULPGC carrying out autopsy on dead female Cuvier's beaked whale (Ziphius cavirostris). Stranded on the southeast coast with no...

Eric Baccega / Keeper (Mrs Mao Min) distracting Giant panda (Ailuropoda melanoleuca) Huan Huan, with food in order to retrieve her female baby (the smaller of female twins) for medical examination, Beauval Zoo, Fran...