Answer:
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
What travels from house to house and is sometimes narrow and sometimes wide but always stays outside?
I'm a type of pizza that is folded in half before cooking to contain a filling
Both old people and owls are said to be possessing this trait
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.