Allegheny County Common Pleas Judge Mary C. McGinley on Thursday tossed out the Nonhuman Rights Project's bid to free five ...

A Washington, D.C.-based animal-rights nonprofit on Tuesday sued the operator and head of the Pittsburgh Zoo & Aquarium, demanding the release of its elephants from captivity. Filed by the Nonhuman ...

A judge has dismissed an animal-rights group's suit seeking the release of five elephants at the Pittsburgh Zoo. The group ...

An animal rights organization has asked the Michigan Supreme Court to hear its case that chimpanzees in an Upper Peninsula zoo deserve constitutional protection against unlawful imprisonment. The ...

WALLACE, Mich. — A Michigan Court of Appeals ruled Friday that chimpanzees are not human, and will not be granted release from a zoo in the Upper Peninsula. A lawsuit filed by the Nonhuman Rights ...

Attorneys from the Nonhuman Rights Project and the Animal Activist Legal Defense Project have vowed to appeal a Dane County ...