Onassis, a giant Amazon River turtle, has lived at the zoo since 1969. No one knows exactly how old she is, but she's still ...

Zordan said that just like older people, elderly animals require more care ... Along with caring for a pair of aging ...

Zoo staff euthanized the 16-year-old otter Tilly, who had a cameo on NBC's '"30 Rock," following a decline due to her age, the Oregon zoo said.

BARCELONA, Spain — At the Barcelona Zoo, a 40-year-old African elephant places her ... Zordan said that just like older people, elderly animals require more care: regular health checks ...