Opossums are the only marsupial found in North America. They live in many parts of the U.S., with the exception of the Rockies, western plains and parts of the northern U.S. Opossums usually live alone and are only active at night.
Raccoons can be found throughout the U.S., but are more common in the wooded eastern portions of the country than in the more arid western plains. Raccoons are rarely seen during the day because of their nocturnal habits.
Tree squirrels get their common name from the fact that they are found only in areas where there are trees. There are three representative species of tree squirrels: fox squirrels, gray squirrels and pine squirrels.
There are more than 980 species of bats worldwide with about 40 species found in the United States. The three most common species that enter structures are the little brown bat, the big brown bat and the Mexican free-tailed bat.
For centuries, bats have been the subject of folklore and myths, often associated with witchcraft, haunted houses and evil. These myths still exist today and cause unfounded fear in many people.