Known as destinations in their own right, these amazing zoos introduce U.S. audiences to wildlife from around the world. Which is your favorite?

The species is threatened by habitat loss, droughts, competition with livestock and infrastructure development.

The treatment is part of the zoo's specialized geriatric care for aging animals that cannot be reintroduced into the wild as zoos world over increasingly emphasize lifelong care. "Sending them ...

But since almost the dawn of the internet there has been one antidote to the chaos that's never faltered: amusing videos of cute animals ... from Khao Kheow Open Zoo in Thailand.

Let us know! The Philadelphia Zoo has sprouted five massive plant displays of giant animals and insects. At the entrance is a huge butterfly sculpture with outspread wings embedded with 3,200 tiny ...