Re: And I thought I was Blessed....
A lot of babies go through a phase where they bite and hit, they don't know it hurts. They can't express their frustrations, wants and needs with words yet, so this is a form of communication. Or it's a form of play, like I said, they don'tknow it hurts.
You're mom shouldn't worry a bit about the pediatrician turning her in to child services. All children get bumps and bruises when they are small.
What you need to make sure of is that the babies aren't left in a situation where the biting can take place. Someone has to be there at all times to separate them as needed. I know you say this is with supervision and it's still happening, so maybe instead of telling your child no, pick him up and move him and tell him no. Then he can't retaliate against his uncle!
This behavior should pass as your baby gets older and as long as you are firm and consistant in dealing with it. I'm sure you'll see as he gets older and can comunicate more with you with words, it will pass.