its a house spider... some spiders but some don't 8 legged spiders bite 6 legged spiders don't.
Most are.
a black spider
I got bit by a spider fitting this description, and hurt very bad. Very small, black spider with two very small dots on its back(side by side), but I don't know what kind it is..left a pretty good welt, and red dot on my leg.
It's most likely the common "Daring jumping spider," Phidippus audax. It's completely harmless.
you have found aRED BACK SPIDER! watch out. poisonous
a black widow
Could be the arrowhead spider.
You are probably defining a false black widow.
The spider that is black with a white crescent on its back is the Brown House Spider. This spider is often confused with the red-back spider.
An ant, or a spider!
A wolf spider
Female Mouse Spider