The possibility of a government shutdown means many federally funded national parks, monuments and attractions might be closed until the government reopens.

The zoo said the program fights wildlife trafficking while providing urgent care for animals seized at U.S. ports.

The park's Facebook page is full of commenters ... "rarely live past the age of 12," according to the National Zoo website. The median lifespan of a cougar is about 13 years for males and 16 ...

Tending to their residents’ mental health is just as important. The Smithsonian’s National Zoo took a creative approach to this in 2017 when zookeepers gave animals musical instruments.

Tree shrews grow to about 5 to 9 inches long, with tails about as long as their bodies, according to the Smithsonian’s National Zoo ... According to the Lincoln Park Zoo, northern tree shrews ...