If another dog bites your dog, your first priorities are separating the animals safely, assessing the wound, and getting veterinary care quickly. Bite wounds treated within six hours have the best chance of healing without complications, so speed matters even when the injury looks minor.
Separate the Dogs Safely
Don’t reach between two fighting dogs with your hands. Loud noises, a blast from a garden hose, or placing a barrier like a chair or trash can lid between them are safer options. Once separated, move your dog to a calm, contained space where you can examine them. Keep the dogs out of sight of each other to prevent another confrontation.
Assess the Wound Right Away
Dog bites on other dogs most commonly land on the legs, head, and neck. Check these areas first, but run your hands over the entire body. Small puncture wounds from canine teeth close over rapidly and are easy to miss, especially under thick fur. Part the hair and feel for wetness, swelling, or flinching when you touch a spot.
Certain signs call for emergency veterinary care immediately: uncontrollable bleeding, difficulty breathing, weakness or collapse, pale or blue gums, persistent crying or whining, or limping. Bites on the legs carry a risk of joint involvement, and bites to the chest or abdomen can damage organs beneath the surface. If your dog shows any of these signs, go to an emergency vet without delay.
Even if your dog seems fine, the visible wound often underestimates the real damage. A dog’s jaws exert crushing force that can tear muscle, damage tissue, and create pockets of dead space under skin that looks intact. A single small puncture on the surface can mean significant injury underneath. This is why veterinarians recommend a professional exam for any visible bite wound, no matter how small it appears.
Basic First Aid Before the Vet
If you can see a wound and your dog will let you handle it, you can do some initial cleaning while you arrange a vet visit. Stop any active bleeding by applying direct pressure with a clean, dry cloth. Wash the wound with mild soap and warm running water, rinsing for three to five minutes. Apply an antibacterial ointment if you have one, and cover the area with a clean bandage.
Don’t use hydrogen peroxide or rubbing alcohol directly on the wound. These can damage tissue and slow healing. Plain soap and water is more effective for initial cleaning. If your dog is in obvious pain or snapping when you try to touch the wound, skip the first aid and head straight to the vet. A stressed, hurting dog can bite even its own owner.
What Happens at the Vet
Your veterinarian will clip the fur around the wound, irrigate it thoroughly, and examine the depth and extent of the damage. They’ll check for tissue that needs to be removed and may take X-rays to look for joint involvement or deeper injuries, especially with leg bites. Wound cultures help identify which bacteria are present so the right antibiotics can be prescribed.
Many bite wounds are left partially or fully open rather than stitched closed. This allows them to drain, since sealing bacteria inside a bite wound is a recipe for a serious abscess. Deeper wounds may need a surgical drain, a small tube placed under the skin to let fluid escape as the tissue heals. More severe injuries involving organs, joints, or extensive tissue damage may require surgery.
Costs vary widely depending on location and severity. A basic exam runs $100 to $150, X-rays or ultrasound $150 to $600, and if your dog needs hospitalization for three to five days, expect $2,000 to $3,500. Emergency surgery can range from $2,000 to $5,000. Even a straightforward bite that needs antibiotics and a follow-up visit can add up to several hundred dollars, so ask your vet about a treatment estimate upfront.
Infection: The Biggest Risk
Infection is the primary concern with any bite wound. Dog mouths carry a range of bacteria, including Pasteurella and Capnocytophaga, both of which can cause serious infections in other animals and in humans. Signs of infection typically appear within a few days but can develop up to two weeks after the bite.
Watch the wound daily for increasing redness, swelling, warmth, discharge (especially if it turns yellow or green), or a foul smell. If your dog develops a fever, becomes lethargic, stops eating, or the area around the wound starts to feel firm or boggy, contact your vet. Infections caught early respond well to antibiotics. Left untreated, they can spread to the bloodstream or deeper tissues and become life-threatening.
Rabies and Vaccination Status
If the dog that bit yours is unknown or its vaccination history is uncertain, rabies becomes a concern. What happens next depends on your dog’s own vaccination status.
- Up to date on rabies vaccination: Your dog should receive an immediate booster shot and be monitored at home for signs of rabies for 45 days.
- Overdue for rabies vaccination: Public health officials assess these cases individually, but dogs that were previously vaccinated and are simply overdue can generally receive a booster and be managed at home with monitoring.
- Never vaccinated: This is the most serious scenario. CDC guidelines recommend euthanasia for unvaccinated dogs exposed to rabies. If you decline, your dog faces a strict four-month quarantine in a secure facility, along with immediate rabies vaccination.
If the biting dog is a healthy domestic dog, local authorities may require a 10-day observation period for that animal to watch for signs of rabies. During this observation period, the biting dog should not be vaccinated, because a vaccine reaction could be confused with rabies symptoms.
Collect Information at the Scene
If another person’s dog bit yours, gather as much information as possible before anyone leaves. Get the other owner’s name, address, and phone number. Ask for their dog’s vaccination records, particularly rabies. If anyone witnessed the incident, collect their names and contact information too. Take photos of your dog’s injuries, the location where it happened, and the other dog if possible.
Many jurisdictions legally require animal bites to be reported to animal control, and some require this even for dog-on-dog bites. Check your local regulations, but reporting is generally a good idea regardless. An animal control report creates an official record, which matters if the other dog has a history of aggression or if you need to pursue the other owner for veterinary costs. In many states, the owner of a dog that attacks another dog is liable for the resulting vet bills.
Behavioral Changes After an Attack
Physical wounds heal faster than psychological ones. Dogs can develop something similar to PTSD after a traumatic attack. Common signs include chronic anxiety, hypervigilance on walks, avoidance of other dogs or the location where the bite happened, sleep disturbances, fear of being alone, loss of interest in activities they used to enjoy, and new aggression. Some dogs mask these symptoms initially as a survival mechanism, and the behavioral changes only surface days or weeks later once they feel safe enough to let their guard down.
Give your dog time to recover in a quiet, low-stress environment. Avoid forcing interactions with other dogs during the healing period. When you do reintroduce walks or outings, keep them short and let your dog set the pace. If fearfulness or aggression persists beyond a few weeks, a veterinary behaviorist or certified dog trainer experienced with reactive dogs can help. Early intervention with behavioral issues tends to produce much better outcomes than waiting to see if the dog “gets over it” on their own.