A bite is a wound received from the mouth (and in particular, the teeth) of an animal, including humans. Animals may bite in self-defense, in an attempt to predate food, as well as part of normal interactions. Other bite attacks may be apparently unprovoked. Self-inflicted bites occur in some genetic illnesses such as Lesch-Nyhan syndrome. Biting is an act that occurs when an animal uses its teeth to pierce another object, including food, flesh and inanimate matter. A person bitten by an animal potentially carrying parvovirus or rabies virus should consult a medical doctor immediately. An animal bite victim may also incur serious bacterial infections of the bone called osteomyelitis which can become life threatening if untreated, whether or not the animal has parvovirus or rabies virus.