Humans bites result from fights, sexual activity, medical and dental treatment, and seizures. Bites also raise the possibility of spousal or child abuse. Children often bite other children, but those bites are hardly ever severe.
Most cat bites are the result of fear on the cat's part
filaria
some times bugs
A ant that bites a human that turns the human to a zombie
if the dog bites hard u can bleed or if its soft nothing happens
if you have an allery or if something bites you or irritate you , depends.
Blood vessels will expand to keep the bite from bleeding. This expansion of blood vessels can irritate nerves that are nearby which causes the insect bites to sting and/or itch.
Foot
YES
well yes flea bites can be harmful to humans but mostly when a flea bites a human it just gets itchy and annoying
Human bites should always be examined by a doctor. Such bites are usually treated with antibiotics and left open because of the high risk of infection. A study released in June 2004 showed that routine use of antibiotics.
On a human you wait it out and the will disappear