My 3.5 year old who has a diagnosis of ASD, has recently started biting his 10 month old baby brother. The baby doesn't do anything to provoke him (doesn't take his toys/ break his things or anything like that), he's not angry when he bites him (he smiles when he bites him), he's not doing it when I'm giving the baby more attention. He just will randomly go over to the baby and bite him hard (he hasn't bit him hard enough to break the skin but he bit him hard enough the other day that there's a… read more