Why is my dog scratching and biting himself all the time?

Dogs scratch occasionally to relieve an itch, but constant scratching and biting—like rubbing their belly on the carpet nonstop or gnawing at their paws until they’re red—isn’t normal. It’s their way of telling you something’s bothering their skin, and ignoring it can turn a small issue into a bigger problem, like infected scratches or even anxiety from discomfort. Many new dog owners brush this off as “just a habit,” but it’s almost always a sign of an underlying cause that needs attention.

Most of the time, the root cause boils down to skin irritation, and allergies are the top culprit here. In places where dogs spend lots of time indoors (like apartments), dust mites or mold can trigger reactions; outside, it might be grass pollen or fleas. Even if you don’t see fleas, their saliva can cause intense itching—this is why vets often recommend year-round flea prevention, which is also a part of responsible pet care in many areas. Another common issue is dry skin, especially in winter when heaters dry out the air; you might notice your dog scratching more after lying near a vent.

Fixing the problem starts with a vet visit—they can rule out issues like mange or bacterial infections and test for allergies. At home, simple steps help too: regular, gentle baths with a dog-specific shampoo (human shampoo dries their skin) can wash away irritants, and adding a omega-3 supplement to their food (check with your vet first) keeps skin healthy. If your dog scratches at their paws a lot, wipe their paws with a damp cloth after walks to remove pollen or chemicals—this is extra important in neighborhoods where lawns are treated with fertilizers.

It’s also key to remember the do’s and don’ts of dog care in most Western communities. Punishing your dog for scratching (like yelling or tapping their paw) won’t help—they’re not acting out, they’re in pain. Instead, redirect their attention with a toy when they start scratching excessively. Also, keeping up with core vaccines (required by law in most places) and cleaning up after your dog on walks aren’t just rules—they’re part of keeping your dog and community healthy, which in turn reduces stress that can make scratching worse.

Constant scratching and biting doesn’t have to be a normal part of life with your dog. By paying attention to their cues, working with your vet, and sticking to gentle, responsible care habits, you can help your pup feel more comfortable and stop those frustrating scratch sessions. Remember, your dog relies on you to notice when something’s wrong—taking action early will keep both of you happier in the long run.