If your dog just bit you and broke the skin, the most important thing to do right now is wash the wound under running water with soap for at least five minutes. After that, you’ll need to assess whether the bite needs medical attention, which depends on how deep it is, where it is on your body, and your own health status. Most dog bites from a healthy, vaccinated household pet heal without serious complications when cleaned properly and monitored closely, but infection is a real risk with any bite that breaks the skin.
Clean the Wound Immediately
Hold the wound under a faucet and let pressurized water run over it while washing with regular soap for at least five minutes. This is the single most effective thing you can do to reduce infection risk. Don’t scrub the wound, as that can bruise the tissue and make things worse. The goal is to flush bacteria out of the wound with steady water pressure, not to aggressively clean it.
After washing, apply an over-the-counter antiseptic cream or lotion. If the wound is bleeding significantly, apply direct pressure with a clean cloth until it stops. For a shallow bite, you can cover it loosely with a clean bandage. For deeper puncture wounds, keep the area clean but avoid sealing it tightly, as doctors often prefer to leave bite wounds open or delay closing them to reduce the chance of trapping bacteria inside.
Bites That Need Medical Attention
Some dog bites you can manage at home. Others need a doctor, sometimes urgently. Here’s what pushes a bite into the “get medical care” category:
- Deep puncture wounds that go into the fat layer or deeper, especially if they may have reached bone, tendon, or a joint
- Bites on the hands, feet, face, or genitals, which carry higher infection risk due to the anatomy of those areas
- Torn or badly damaged skin with significant bleeding that doesn’t stop with pressure
- Any bite if you’re immunocompromised, have diabetes, liver disease, or don’t have a spleen, as your body is less equipped to fight off the bacteria in dog saliva
If none of those apply and the bite is a shallow break in the skin from your own healthy, vaccinated dog, home care with close monitoring over the next several days is often reasonable. But when in doubt, call your doctor’s office. Bite wounds are one area where medical professionals would rather see you for a “nothing” visit than have you wait until an infection takes hold.
Why Dog Bites Get Infected So Easily
A dog’s mouth contains bacteria that can cause serious infections in human tissue. The most common culprit is a type of bacteria that lives normally in dog saliva and causes rapid, painful wound infections within the first day or two. A rarer but more dangerous organism called Capnocytophaga can cause symptoms that start three to five days after a bite and progress from a mild local infection to a systemic illness. Capnocytophaga is uncommon in healthy people but poses a real threat to anyone with a weakened immune system or without a spleen.
Puncture wounds are especially problematic because a dog’s teeth push bacteria deep into tissue and then the skin closes over the top, creating a warm, sealed environment where bacteria thrive. This is why doctors often avoid stitching bite wounds closed right away. The World Health Organization recommends postponing suturing of bite wounds to reduce infection risk. When stitches are used, they’re typically reserved for facial bites (where blood flow is strong and cosmetic outcomes matter) or wounds less than eight hours old that show no signs of infection.
Watch for These Infection Signs
Even with proper cleaning, infection can develop. Monitor the bite closely for the first week, checking it at least twice a day. The warning signs typically appear within two to four days:
- Increasing redness that spreads outward from the wound rather than fading
- Swelling and warmth around the bite area
- Worsening pain rather than gradual improvement
- Pus or fluid draining from the wound, particularly if it smells bad
- Fever
- Red streaks extending from the wound toward your body (a sign the infection is spreading through your lymphatic system)
Any of these signs means you should see a doctor promptly. Cellulitis, a spreading skin infection, is one of the more common complications. In a case series involving dog bites to the hand, patients returned within about four days with noticeable swelling, redness, tenderness, and joint stiffness. Hand bites in particular can escalate quickly because tendons and joints sit so close to the surface.
Tetanus and Rabies Considerations
Dog bites count as “dirty wounds” for tetanus purposes. If your last tetanus booster was five or more years ago, you’ll likely need one. If you can’t remember when you last had a tetanus shot, that’s worth a call to your doctor or a visit to urgent care.
Rabies is a different calculation. If this is your own dog and the dog is up to date on rabies vaccinations, the risk is extremely low. The standard protocol is still to observe the dog for 10 days after the bite, regardless of vaccination status. A dog that was rabid at the time of a bite will show obvious neurological symptoms within that 10-day window. If the dog remains healthy and behaves normally throughout that period, rabies can be ruled out.
If you were bitten by a dog you don’t know, a stray, or a dog that was behaving strangely, seek medical attention right away. Rabies is almost always fatal once symptoms appear, but it’s entirely preventable with prompt post-exposure treatment.
Preventive Antibiotics
Not every dog bite requires antibiotics, but doctors often prescribe them preventively for higher-risk bites rather than waiting for infection to develop. The situations that typically warrant preventive antibiotics include bites to the hands, feet, face, or genital area; deep puncture wounds; moderate to severe bites with crushed or devitalized tissue; wounds that have been stitched closed; and bites in people who are immunocompromised. If your bite is a minor, shallow wound on your arm or leg from a healthy pet, your doctor may skip antibiotics and simply have you monitor for infection signs instead.
Reporting the Bite
Even when it’s your own dog, a bite that breaks the skin may need to be reported. If you visit a doctor or emergency room, the healthcare provider is typically required by law to report the bite to local animal control, usually within 24 hours. This isn’t about getting your dog in trouble. It triggers the standard 10-day observation period and helps public health officials track rabies risk in the community. Requirements vary by state and county, so the specifics depend on where you live, but you should expect the question to come up at any medical visit for a bite wound.
If your dog bit you during an identifiable trigger (you accidentally stepped on them, startled them while sleeping, or got between them and food), that context matters. A single bite with a clear provocation is very different from unprovoked aggression. Either way, consider consulting a veterinary behaviorist or certified dog trainer to understand why the bite happened and reduce the chance of it happening again.