If your dog just ate raccoon poop, call your vet as soon as possible. Raccoon feces can carry a dangerous parasite called raccoon roundworm, and early treatment within the first few days is the most effective way to prevent serious illness. In most cases, dogs that get prompt veterinary attention do fine, but this is not a “wait and see” situation.
Why Raccoon Poop Is Especially Dangerous
Raccoon feces stands apart from other wildlife scat because of one parasite in particular: Baylisascaris procyonis, commonly called raccoon roundworm. This parasite is found in a large percentage of raccoons across North America, and its eggs are shed in massive numbers in raccoon droppings. Unlike many parasites that cause mild stomach upset, raccoon roundworm larvae can migrate into a dog’s brain and spinal cord, causing progressive neurological damage that is often irreversible.
Beyond roundworm, raccoon feces can also harbor giardia, leptospirosis bacteria, and other intestinal parasites. Any of these can make your dog sick, but raccoon roundworm is the one that creates real urgency.
What to Do Right Now
The single most important step is contacting your veterinarian. If it’s after hours, call an emergency vet clinic. When you call, tell them approximately how much raccoon feces your dog ate and when it happened. The vet will likely recommend bringing your dog in for a prophylactic deworming treatment. For raccoon roundworm exposure in humans, the CDC recommends starting treatment ideally within three days of ingestion, and the same urgency applies to dogs. The sooner a dewormer is given, the better the chance of killing the larvae before they migrate into tissue.
In the meantime, prevent your dog from eating any more feces in the area. If you know where the raccoon was defecating (raccoons tend to use the same spot repeatedly, creating what’s called a “latrine”), keep your dog away from that location entirely.
Raccoon Roundworm: What You’re Watching For
Clinical signs of raccoon roundworm infection typically appear 2 to 4 weeks after exposure, depending on how many eggs were ingested. Early symptoms can be subtle. In a documented case of neurologic infection in a young dog, the first sign was unsteady movement (ataxia), which progressed over about a week to exaggerated stepping motions, involuntary tremors, agitation, decreased awareness, and eventually uncontrolled paddling of the legs. That case ended in euthanasia.
This is not meant to alarm you but to underscore why calling the vet quickly matters. Dogs treated with a dewormer before symptoms develop have a far better outlook than those treated after neurological signs appear. Once the larvae have migrated into the brain, the damage is largely done.
Other Infections to Watch For
Even if your vet addresses the roundworm risk, keep an eye on your dog over the following weeks for signs of other infections commonly carried in raccoon feces.
Giardia causes watery diarrhea, gas, vomiting, and stomach discomfort. Some dogs carry giardia without showing any symptoms at all. One tricky aspect of giardia is that dogs don’t shed the parasite in every bowel movement, so a single fecal test can come back negative even when the dog is infected. Your vet may need to test multiple stool samples.
Leptospirosis is a bacterial infection raccoons commonly carry. Early signs include fever, lethargy, loss of appetite, joint or muscle pain, and changes in urination. Within a few days, infected dogs may start vomiting, become dehydrated, and develop back pain from kidney inflammation. Leptospirosis responds well to antibiotics when caught early, but it can cause severe organ damage if treatment is delayed. This infection is also transmissible to people, so it’s worth mentioning to your vet even if your dog seems fine initially.
Rabies Is Not a Risk Here
If rabies crossed your mind, you can set that concern aside. Rabies is transmitted through saliva, typically via a bite or when saliva contacts an open wound. It is not spread through feces. As long as your dog wasn’t bitten or scratched by a raccoon, rabies is not part of this equation. That said, keeping your dog current on rabies vaccination is always a good idea in areas with active raccoon populations.
Protecting Your Family
Raccoon roundworm is also a serious risk for humans, especially young children. The parasite doesn’t spread directly from dog to dog or dog to human through casual contact, but there’s a secondary concern. If your dog ate raccoon feces and still has residue on their muzzle or paws, those eggs could potentially be transferred to surfaces, hands, or faces during normal petting and play.
Wash your hands thoroughly after handling your dog, and keep children from kissing or being licked by the dog until it has been bathed. In humans, raccoon roundworm can cause neurological symptoms, vision loss, and organ damage, with an incubation period of 1 to 4 weeks. The risk from brief secondary contact is low, but basic hygiene eliminates it.
Cleaning Up a Raccoon Latrine
Raccoons are creatures of habit. They tend to defecate in the same spot repeatedly, creating concentrated deposits of parasite eggs. If you’ve found one of these latrines in your yard, on your deck, or near your home, cleaning it properly is important because most common disinfectants and chemicals do not kill raccoon roundworm eggs.
What does kill them is heat. The CDC recommends treating contaminated hard surfaces like decks, patios, and tools with boiling water. For soil, the approach is more involved: break up and turn over the contaminated dirt several times, using a propane torch to flame each layer. Wear disposable gloves during cleanup and avoid stirring up dust that could be inhaled. Bag all fecal material and dispose of it in the trash, then flush any contaminated water down the toilet rather than pouring it in the yard.
If the latrine is on soil where your dog plays, consider removing the top several inches of dirt entirely and replacing it. Roundworm eggs can persist in soil for years under normal conditions.
Reducing Future Risk
Dogs are naturally attracted to raccoon feces, so prevention takes some effort. Supervise your dog during outdoor time, especially at dawn and dusk when raccoons are most active. Train a reliable “leave it” command if your dog doesn’t already have one. Check your yard regularly for raccoon droppings, particularly in elevated spots like the base of trees, on top of woodpiles, or along fence lines where raccoons prefer to create latrines.
Make sure your dog’s distemper vaccination is current. Raccoons are one of the most common carriers of canine distemper, and while fecal-oral transmission is less common than direct contact, a vaccinated dog is protected regardless of the route. Leptospirosis vaccines are also available for dogs and worth discussing with your vet if you live in an area with frequent raccoon activity.