A Washington, D.C.-based animal-rights nonprofit on Tuesday sued the operator and head of the Pittsburgh Zoo & Aquarium, ...

Chimpanzees in Michigan are not considered “persons” with human rights, according to the state’s Court of Appeals. That means ...

The Nonhuman Rights Project sues the Pittsburgh Zoo for inadequate elephant living conditions, seeking sanctuary for the ...

The operator and head of the Pittsburgh Zoo is facing a lawsuit filed by a Washington, D.C.-based animal rights nonprofit, ...

An animal rights group has filed a lawsuit against the Pittsburgh Zoo & Aquarium and is demanding the zoo release its ...

An animal rights group is suing the Pittsburgh Zoo & Aquarium, seeking the release of five elephants it says are being kept ...

An animal rights group plans to appeal a case to the Michigan Supreme Court seeking an unlawful imprisonment hearing for six ...

A Michigan Court of Appeals ruled Friday that chimpanzees are not human, and will not be granted release from a zoo in the ...

A court hearing Tuesday will determine whether an Upper Peninsula zoo should have to justify the captivity of chimpanzees.

A case of whether seven chimpanzees at the DeYoung Family Zoo in Wallace should be granted habeas corpus rights was heard by ...

The Nonhuman Rights Project has sued the Pittsburgh Zoo to gain the release of five elephants over alleged mistreatment.