Opossum

Photo by: D. Carlson

Opossums are usually solitary and nomadic, staying in one area as long as food and water are easily available.

Threatened opossums (especially males) will growl deeply, raising their pitch as the threat becomes more urgent. Males make a clicking "smack" noise out of the side of their mouths as they wander in search of a mate, and females will sometimes repeat the sound in return.