How fast can a deer run?

The most common deer species in the U.S., the whitetail deer, can run up to 30 miles an hour.They are also fast swimmers and leapers.

When startled, the whitetail deer generally exhibits signs that it uses to alert other deer to danger, like snorting and stomping its hooves. It can also raise its tail to show the underside, which is white, in a gesture that is known as "flagging." This "flag" is useful to fawns to help them see where their mother runs when danger is afoot, and they can more readily see the white "flag" of her tail and follow her to safety.