| | Bites & Stings | Flea Bites Are your fingernails poisonous to skin? Fingernails are composed of a protein called keratin, which is non-toxic and therefore not poisonous to the skin. Flea Bites - Related Articles Why do you have boogers? Can a blackberry thorn puncture cause an infection? The Life Cycle of the Human Flea How to Stop Gnat Bites What are the traits of worms? Flea Bite Vitamin Prevention How do you get hard boogers stuck in nose out?
