Some biologists worry about the impact burros could have on Arizona's desert ecosystem from eating larger plants relied upon ...

A recent study from the Arizona Game and Fish Department found that an invasive species of burros is threatening the Sonoran ...

An archaeologist is piecing together what the V-shaped stone structures—some stretching 500 feet long—were used for.

MORENO VALLEY, Calif. (AP) — A wild burro dubbed Cupid is recovering from surgery after being shot with an arrow in what officials say is the latest in a series of a half-dozen attacks since June on ...