Do rats bite?

It's very rare to find a rat that bites. Most will just squirm. They may nibble at your hands/eyebrows/etc. but they are just trying to groom you when they do that.

There are a few (but not very common) that bite, but that is caused by bad socialization usually. Rats may nibble on fingers when they are young, but it doesn't hurt at all.

so no in general rats don't bite...