U is for Uinta Ground Squirrels
These ground squirrels hibernate for most of their lives. They spend most of the year sleeping in their underground homes and only come out for a few months in the summer.
Did You Know?
Even though the animals of Yellowstone seem tame they are still wild. Feeding the animals is not permitted in any way, and all visitors must keep 100 yards away from wolves and bears, and 25 yards from other animals.