Possums cannot be reliably potty trained the way domestic animals can
A possum will not use a litter box or designated bathroom area consistently, even if you raise it from a young age. Unlike dogs, cats, and rabbits — animals domesticated over thousands of years — possums lack the neurological wiring and behavioral instinct to control their bathroom habits on command or to return to the same spot repeatedly. They are wild animals, not pets, and their digestive systems work on a different schedule than household animals.
If you have found an orphaned possum or are caring for an injured one temporarily, you should expect it to urinate and defecate wherever it is at any given moment. This is normal possum behavior and not a sign of illness or stubbornness. The animal is not being difficult — it is straightforward being a possum.
Key Takeaways
- Possums do not have the biological capacity to hold their urine and feces on a schedule the way domesticated animals do.
- Even hand-raised possums from infancy will not reliably use a litter box or designated area.
- Frequent bathroom accidents are normal possum behavior and should be expected if you are caring for one temporarily.
- A possum in your care should be housed in an enclosure that is straightforward to clean, with absorbent bedding that can be changed daily.
- Long-term possum care should only be undertaken by licensed wildlife rehabilitators or sanctuaries, not private individuals.
Why possums cannot control their bathroom habits
Domestic animals like dogs and cats evolved alongside humans for thousands of years. During that time, the animals that were willing and able to hold their waste until a designated time were the ones humans kept and bred. Over many generations, this selected for animals with both the physical ability to control their sphincters and the behavioral drive to do so. Possums have had no such selective pressure.
A wild possum's digestive system is built for constant foraging and movement through trees. The animal eats frequently, moves frequently, and eliminates frequently — sometimes every few minutes. Its body does not store waste the way a dog's does, and its brain does not register "holding it" as a normal or desirable state. Asking a possum to use a litter box is like asking a fish to climb a tree: the animal is not being stubborn, it straightforward cannot do what you are asking.
What to expect if you are temporarily caring for a possum
If you have found an injured possum, a baby separated from its mother, or are fostering one for a wildlife rehabilitator, you should prepare for constant cleanup. The possum will urinate and defecate in its sleeping area, its eating area, and anywhere else it spends time. This is not house-training failure — it is the animal being exactly what it is.
Use absorbent bedding such as aspen shavings, paper-based bedding, or puppy pads that can be changed multiple times per day. Do not use cedar or pine shavings, which are toxic to possums. Keep the enclosure in a warm, quiet, dark space away from household activity. Possums are nocturnal and stressed by bright light and noise during the day.
Wash your hands thoroughly after handling the possum or cleaning its space. Possums can carry parasites and bacteria that are harmless to them but may affect humans. If you are caring for a possum, you should already be in contact with a licensed wildlife rehabilitator who can advise you on proper care and timeline for release or transfer.
Housing setup for a possum in your care
A temporary possum enclosure should be at least 4 feet tall and 3 feet wide — possums are climbers and need vertical space. Include branches or a climbing structure, a dark sleeping box filled with dry leaves or shredded paper, a food dish, and a water bowl or bottle. Line the entire floor with absorbent bedding that you will change at least twice daily.
Keep the enclosure away from direct sunlight, drafts, and household pets. Possums are solitary and do not need or want companionship from other animals. A stressed possum may hiss, bare its teeth, or play dead — all normal defensive behaviors that mean the animal needs more quiet and less handling.
When to contact a wildlife rehabilitator
If you have found a possum, your first step should be to call your local animal control, wildlife department, or a licensed wildlife rehabilitator in your area. Many areas have a wildlife hotline you can reach through your county or city website. These professionals have the legal permits, facilities, and informed to care for wild animals properly.
In most places, it is illegal to keep a wild possum without a permit, even temporarily. A rehabilitator can tell you whether the animal needs care or can be released when ready, and they will handle the animal according to state wildlife laws. If you found a baby possum, the rehabilitator may ask you to leave it where you found it — the mother often returns for babies that appear abandoned but are actually just waiting.
The difference between possums and opossums
In North America, the animal most people encounter is the Virginia opossum, often called a possum (though technically the name "possum" refers to Australian marsupials). The Virginia opossum is the only marsupial native to the United States and Canada. It is not a rodent, not a rat, and not related to the Australian possum, despite the similar name.
Virginia opossums are actually beneficial to have around your property — they eat ticks, insects, and carrion that would otherwise attract other pests. If you find one in your yard, the best approach is usually to leave it alone. It will move on within a few hours. If it is injured or a baby is separated from its mother, that is when you contact a rehabilitator.
Why possums make poor pets
Beyond the bathroom issue, possums are not suited to life in a human home. They are nocturnal, which means they are active and vocal at night when you are trying to sleep. They have sharp claws and teeth and will use them if frightened or handled roughly. They do not bond with humans the way a dog or cat does, and they do not enjoy petting or close contact.
A possum kept in captivity becomes stressed, which shortens its lifespan and makes it more likely to bite or scratch. The animal is not happy in a cage, no matter how large or well-appointed. If you care about the possum's welfare, the kindest thing you can do is may support it is released back to the wild or transferred to a licensed sanctuary where it can live with others of its kind in a naturalistic setting.
Frequently Asked Questions
Can a baby possum learn to use a litter box if I raise it from infancy?
No. Even possums raised by hand from birth will not reliably use a litter box. They may occasionally eliminate in the same spot by chance, but they will also eliminate everywhere else. Hand-raising does not change the animal's biology or instincts.
Is it normal for a possum to pee and poop constantly?
Yes. Possums eliminate frequently throughout the day and night. This is normal behavior and reflects their fast metabolism and constant foraging lifestyle in the wild. It is not a sign of illness or stress.
What should I do if I find a baby possum alone?
Call a wildlife rehabilitator before assuming the baby needs help. Mother possums often leave their young for extended periods while foraging. If the baby is uninjured and in a safe location, the mother will likely return. A rehabilitator can advise you on whether intervention is necessary.
Can I keep a possum if I get a special permit?
Most states do not issue permits for private individuals to keep wild possums as pets. Some wildlife sanctuaries and licensed rehabilitators hold permits, but these are for animals that cannot be released. If you want to help possums, contact a local wildlife organization about volunteer opportunities instead.
Do possums smell bad because they cannot be potty trained?
Possums do have a musky odor, especially males, but this is not related to bathroom habits. The smell comes from scent glands and is how possums communicate with each other. It is stronger when the animal is stressed or threatened.