I have one baby that with the right interaction will hiss and sounds like one of those wind up cars ... "Hchhhwwwweerrrrrrrrrrrrrrr hcchhhhwwweeeerrrrrrrrrrr!!!!!" LOL. But she has never drawn blood or anything like that, just sounds vicious though! She is all talk.

If yours actually bite, lol that's a lot more scary, and then maybe try very slow movements and leaving them alone for a while, picking them up by fingers under tummy, maybe offering food first and then picking up.

They say it doesn't take long if you try and hold for just a few minutes a day so persevere and good luck