Pennsylvania designated the white-tailed deer as official state animal in 1959. The white underside of the deer's tail waves when running and is flashed as a warning when danger is sensed.

An animal of incredible beauty and power, white-tailed deer are able to run up to 40 miles per hour, jump 9 foot fences, and swim 13 miles per hour. Both native Americans and settlers relied on the white-tailed deer for buckskin and food.

Some farmers say that Pennsylvania's state beverage can be an effective repellent to the state animal (by spraying diluted milk on garden plants). Eleven states have designated the elegant white-tailed deer as an official state symbol: Arkansas - Illinois - Michigan - Mississippi - Nebraska - New Hampshire - Ohio - Oklahoma - Pennsylvania - South Carolina - Wisconsin.

Source:

The White-Tailed Deer: EEK Critter Corner
Pennsylvania - Symbols: PA Historical & Museum Comm.
State Symbols: Hello Pennsylvania

Links:

White-tailed Deer: Nature Works
Free Photos: Nature of New England
Forest Foods Deer Eat: MI Dept of Natural Resources
White-tailed Deer: Animal Diversity Web; U of Michigan
White-tailed Deer: Desert USA
State Animals - Mammals: 50 States List