Bite wounds, usually from fighting, may not always seem serious, but they can indicate internal damage to organs and other structures in the body.
Bite wounds also allow the introduction of bacteria. Although the puncture wound may heal, the bacteria can produce a deep infection and lead to an abscess. If you know your pet has been in a fight, get them to a vet. In the case of severe attack wounds, control the bleeding and get them to a vet immediately, being careful to protect yourself against scratches and bites, as your pet may be in shock and in a state of confusion and distress.