Baby possums keep the same diet as adults, which consists of garbage, carrion, grass, nuts, fruit, mice and even birds and chickens. A baby often accompanies its mother on hunts, riding along on her back, and possums and their babies are regularly spotted around garbage cans and near road kill.
National Geographic notes that baby possums are as small as honeybees. Once born, they immediately crawl into their mothers' pouch, where they develop. According to National Geographic, there may be as many as 20 in a litter, but only half or fewer survive to become adults. Possums spend much of their time in trees, and the nests of these scavengers are often located in holes in trees or in the dens of other animals.