General Information: Wild Burros (feral ass) (Equus asinus) are non-native relatives of horses that were introduced into the western wildlands when the late 1800s and early 1900s gold and silver mines played out and prospectors abandoned their animals.

While these animals are of historical interest, they are bad for native environments and the native species the environment supports. In particular, wild burros are bad for native desert bighorn sheep because bighorn need clean water, and wild burros stir up waterholes into muddy messes. Native bighorn have lost habitat because of the damage wild burros do to springs.