If a dog has bitten you, your first priority is stopping any bleeding and thoroughly cleaning the wound. Most dog bites don’t cause life-threatening injuries, but even a minor puncture can lead to a serious infection if it’s not properly cared for. What you do in the first few minutes and hours makes a real difference in how well the wound heals.
Immediate First Aid Steps
If the wound is bleeding, apply firm pressure with a clean cloth or bandage until it stops. Once bleeding is controlled, run clean water over the bite for several minutes to flush out bacteria. Wash the area thoroughly with mild soap, working it gently into and around the wound. Dog mouths carry dozens of bacterial species, and mechanical cleaning (physically washing the bacteria out) is the single most effective way to prevent infection.
After washing, pat the area dry and apply a thin layer of antibiotic ointment. Cover the wound with a clean bandage. Change the bandage at least once or twice a day, reapplying ointment each time, and watch for early signs of infection over the next few days.
When the Bite Needs Medical Attention
Not every dog bite requires a trip to urgent care, but many do. You should get medical attention if:
- The wound is deep or puncture-shaped. Puncture wounds are especially prone to trapping bacteria beneath the skin.
- The skin is badly torn, crushed, or won’t stop bleeding.
- The bite is on your hand, face, or over a joint. Hand bites carry a high infection rate because tendons and joints sit close to the surface.
- You don’t know the dog or its vaccination status. A stray or unvaccinated dog raises the risk of rabies.
- You have a weakened immune system. People with diabetes, cancer, HIV, those without a spleen, or anyone on immunosuppressive medications face a significantly higher risk of dangerous infections from a bite.
If you’re unsure whether the bite is serious enough to need care, err on the side of going in. Deep punctures can look minor on the surface while hiding real damage underneath.
What Happens at the Doctor’s Office
A doctor will typically irrigate the wound more thoroughly than you can at home, using a pressurized syringe to flush bacteria from deep tissue. They’ll assess whether the wound needs stitches. Interestingly, many bite wounds are intentionally left open rather than stitched closed. Closing an infected or potentially infected wound can trap bacteria inside and make things worse. The World Health Organization recommends postponing suturing of bite wounds as a measure to prevent infection.
Exceptions exist. Fresh wounds less than eight hours old, particularly on the face (which has strong blood flow and heals well), are more likely to be stitched right away. Puncture wounds and anything that looks clinically infected will almost always be left open to heal gradually.
For high-risk wounds, doctors commonly prescribe a short course of preventive antibiotics, typically three to five days, to head off infection before it starts.
Tetanus and Rabies Concerns
Your doctor will ask when you last had a tetanus shot. If it’s been five or more years and the wound is deep or dirty, you’ll need a booster, ideally within 48 hours of the bite. If you’ve never completed the full tetanus vaccine series, the timeline is even more urgent.
Rabies is rare in domestic dogs in the United States, but it’s nearly always fatal once symptoms appear, so it’s taken seriously. If the dog that bit you is a known pet with current vaccinations, rabies is very unlikely. If the dog is a stray, acting strangely, or can’t be located, your doctor and local public health officials will assess whether you need post-exposure treatment. This involves a series of shots given over a couple of weeks. Treatment can be started at any point before symptoms develop, so even a delayed visit is worthwhile if you’re concerned.
A healthy domestic dog that bites someone is typically quarantined and observed for 10 days. If the dog remains healthy during that period, rabies is effectively ruled out.
Recognizing an Infection
Even with good wound care, infections can develop. Watch for these signs in the days following a bite:
- Increasing redness spreading outward from the wound
- Swelling that gets worse rather than better
- Warmth or throbbing pain at the bite site
- Pus or cloudy drainage
- Fever or chills
- Red streaks extending away from the wound toward your body
Infections from dog bites often show up within 24 to 48 hours, though some take longer. The most common culprit is a type of bacteria that lives naturally in dogs’ mouths and causes rapid-onset redness, swelling, and pain around the wound. Cellulitis, a spreading skin infection, is one of the more frequent complications. It’s treatable with antibiotics but can become serious if ignored.
People with weakened immune systems face an additional risk from a less common bacterium carried in dog saliva that can cause sepsis, kidney failure, and gangrene. If you fall into a higher-risk group, conditions like diabetes, cancer treatment, HIV, not having a spleen, or heavy alcohol use, take any sign of infection especially seriously.
Information to Collect
While you’re managing the wound, try to gather as much information as possible about the dog and the circumstances. This matters for both medical decisions and any reporting you may need to do. Get the dog owner’s name, address, and phone number. Ask whether the dog’s rabies vaccination is current and request proof if possible. If the dog is a stray, note its description, where you last saw it, and which direction it went.
Most jurisdictions require dog bites to be reported to local animal control. This isn’t just a legal formality. Reporting triggers a quarantine observation period for the dog, which is how public health officials confirm the animal doesn’t have rabies. It also creates a record if the dog has a pattern of aggressive behavior. You can typically file a report by calling your city or county’s animal services department.
Healing Timeline and What to Expect
Minor dog bites that don’t require stitches generally heal within one to two weeks with proper wound care. Deeper wounds or those left open intentionally take longer, sometimes several weeks, and may leave more noticeable scarring. Bites on the hands tend to heal slower and carry a higher infection rate because of the complex anatomy and relatively limited blood supply in that area.
Keep the wound clean and dry during healing. If you were prescribed antibiotics, finish the entire course even if the wound looks better. Watch for infection signs throughout the healing process, not just in the first couple of days. Some infections develop a week or more after the bite, particularly if bacteria were pushed deep into the tissue.