A federal judge has given the U.S. Fish and Wildlife Service three more years to determine whether the common hippopotamus should be protected under the U.S. Endangered Species Act. Wild hippos ...

WASHINGTON— Animal protection and conservation groups sued the U.S. Fish and Wildlife Service today for missing its deadline to decide whether the common hippopotamus should be protected under the U.S ...

WASHINGTON— Animal protection and conservation groups today sent a notice of intent to sue the U.S. Fish and Wildlife Service for failing to respond to a legal petition to protect the common ...

Though most common hippos give birth in water, pygmy hippos also can give birth on land. Step aside, Moo Deng: Watch this baby pygmy hippo born in Virginia just before Christmas Iris gave birth to ...