Immediate steps
Calmly create space between the dog and the injured person. Move the dog to a secure room or crate without yelling or chasing. Then attend to the injury.
Medical care
Any bite that breaks the skin deserves attention from a medical professional, because infections and other risks can develop. Do not wait to see what happens.
Rules and reporting
Many places have rules about reporting bites and about animal health records such as rabies vaccination. Contact your local animal control or health authority to learn what applies where you live.
Follow-up for the dog
Book a veterinary exam to rule out pain or illness, then speak with a qualified behavior professional. Keep the dog safely managed in the meantime.
Protect yourself
Write down what happened and when. If there are legal or insurance questions, ask the appropriate professionals for advice.
This page is general information. It is not veterinary, medical, legal or behavior consultation advice, and it never teaches anyone to train a dog to bite. If a dog has bitten or seems dangerous, involve your veterinarian and a qualified behavior professional.