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.

David Perpinan / Use of a doppler probe to detect heart rate in a captive African giant snail (Achatina fulica), Small repro only.

Pete Oxford / Black Rhinoceros (Diceros bicornis) sub-adult receiving medical exam before relocation, Great Karoo, South Africa

ZSSD / Giant Panda (Ailuropoda melanoleuca) cub getting medical exam, native to China

Flip Nicklin / Bottlenose Dolphin (Tursiops truncatus) researchers preparing dolphin for medical exam, Long Marine Lab, Santa Cruz, California

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

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, performing medical exam on three-month-old orphaned cub, Sonoma County Wildlife Rescue, Petaluma, 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...