Thunderous applause often greets the playful antics of a baby gorilla or the majestic march of an elephant at the zoo. But ...

The Philadelphia Zoo welcomed four new Western Santa Cruz tortoises, a subspecies of the Galápagos tortoise. What makes these ...

Sumatran tigers are among the rarest cats on the planet and have been classified as critically endangered by the ...

Birds are among the most vulnerable. Since humans arrived, 71 birds have gone extinct, according to the state Department of ...