Pennsylvania is home to the nation's first zoo, the Philadelphia Zoo.

She has had her eye on the Philadelphia Zoo, but this being one of the most popular venues, she might have to get in line.

His most recent film is about bird migration education produced for the Philadelphia Zoo.

He was promoted to Director of the Philadelphia Zoo in 1967.

The sale attracted some attention, and the Philadelphia Zoo for a while had a capacity audience.

It opened in 1875, just 14 months after the Philadelphia Zoo on July 1, 1874.

The first successful captive breeding of this species was at the Philadelphia Zoo in 1993.

It opened on July 4, 1874, three days after the Philadelphia Zoo.

This is the first giraffe birth at the Philadelphia Zoo in over a decade.

He leaves Boston and takes up residence at the Philadelphia Zoo.