Behind the scenes at a Chicago zoo, chimpanzees who spent years entertaining humans are learning to befriend their own kind.

Mobile phones could be the key to a cheaper and more reliable way of tracking animals for ecology and conservation research, according to a new study.

Piper the Labrador embodies her breed’s joyful, energetic spirit,” the shelter said. “Her tail wags with infectious enthusiasm, her eyes sparkle with curiosity, and she’s always ready to greet the ...