Cobby, male Chimpanzee- 52 years old SF Zoo (photo credit Maria Lopez)

Doctors from the University of California San Francisco, and the Veterinary Staff from the San Francisco Zoo, perform a yearly check up on 52-year-old Chimpanzee Cobby at the Zoo hospital in San Francisco February 24, 2010. Cobby is the oldest male Chimp nationally in captivity. (Maria J. Avila Lopez/Mercury News)

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Tony Tiger ultrasound

March 11, 2009 Portable laptop ultrasound using a laptop computer and a USB probe

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Gail Hedberg, RVT February 10, 2009. Monitoring anesthesia-female Snow Leopard "Ming Wah" San Francisco Zoo Hospital