An<unk>  is a wound, usually a puncture or laceration, caused by the teeth. An<unk>  usually results in a break in the skin but also includes contusions from the excessive pressure on body tissue from the<unk> . The contusions can occur without a break in the skin.<unk> s can be provoked or unprovoked. Other<unk>  attacks may be apparently unprovoked. Biting is a physical action not only describing an attack but it is a normal response in an<unk>  as it eats, carries objects, softens and prepares food for its young, removes ectoparasites from its body surface, removes plant seeds attached to its fur or hair, scratching itself, and grooming other<unk> s.<unk> s often result in serious infections and mortality.<unk> s not only include injuries from the teeth of reptiles, mammals, but fish, and amphibians. Arthropods can also<unk>  and leave injuries.
Animal bite
Spider bite
Dog bite
Cat bite
Needlestick injury
Dental instrument
Insect bites and stings
Stab wound