Mule deer herds are declining across the West for many reasons. But three states, Utah, Wyoming and Nevada, want to both pin the ...

Cassy the mountain lion, named for the Cascade Mountains where she was found orphaned as a cub in 2007, died at her Kansas zoo at 17 years old.

Mountain lions could be pursued by “hazers” with dogs under a new California bill, introduced a day after similar legislation concerning bears.

Saguaro National Park is beautiful, but it's also home to some incredibly dangerous wildlife. Here are the animals you need ...