[SWHouston]

I agree that the small amount of blood is of little concern. A larger amount and a clear source would be.

On the finger biting...
Often times we "object" because of a puppies aggression in that area. But, they really are trying to hold and familiarize themselves with us. As we feel their sharp teeth, we attempt to withdraw and that exacerbates the situation.

When this occurs, offer a finger to it, allow it to lick and "feel" of it's Leader's scent and substance. They're just trying to use their mouths like we do our hands and get to know you. When you withdraw, sometimes they don't want to let go and that's where the conflict starts.