Opossums are Nocturnal Creatures and Marsupials, in fact Opossums are the only Marsupial north of Mexico. Marsupials have a pouch on their belly that hold their young similar to a Kangaroo. Opossums are slow moving waddling creature mostly seen on the side of the road as road kill.
Opossums are 2'-3' long, including the tail, and weigh up to 15 lbs. They are covered with short wiry fur, grey with longer course white tipped hairs. Opossums have a pointed face and large mouths which contain a number of sharp jagged teeth. Often mistaken for a very Large Rat because it has a long, Bald Rat like Tail. Noted for their ability to eat just about anything. They have even been known to enter a home through a pet door in search of food. The Opossum are hosts for Cat and Dog Fleas.
All Wild Animals will Bite if provoked but the Opossum is very docile and bites are very rare. At most it will probably hiss at you. The saying Opossums Play Dead is in fact true. If the Opossum is attacked, as a defensive move it will roll over and play dead until the threat is gone.
Opossums are Nocturnal meaning they roam at night but they will also forage for food during the day food is scarce. A batch of her offspring will either be in her pouch or on her back. All of these Animals will dig in the lawn or planters in search of grubs and insects to eat. Other signs in the yard are overturned trash cans, foot prints and feces. Foot prints and feces could be in the attic as well. Strange noises in the attic or walls can be an indication.
There is probably something in your yard that the Opossum like. This could be pet food, a fruit tree, a garden, opened trash cans or just a small opening to your attic, basement or shed.
Provide less food for them. Try to trap them, and only Use a Humane Catch Trap. Seal off all exterior openings after the animal is gone. But the best way is to call Rob at Cobra Pest Control.