I occasionally look after a lovely 3 year old boy. His Dad is quite outgoing and plays 'fun' fights with him, probably thinking that as he is a boy he can't be too soft. I have however seen him pick up the child by one ankle and throw him onto the sofa. The child went quiet, and looked a little stunned for a few seconds, but then became very boisterous with his father and it ended with tantrums, and then reprimands. There was a lot of shouting, and chaos, which was obviously having an effect on the boy's Mother who has not been well and needs time to recover. Is this normal father/son playfighting, or have I got cause for concern? I do worry too that this child will act out this kind of behaviour on children who are much smaller than himself. Whilst we do want our children to grow up to be confident and able to stand up for themselves, this seems to me that he is learning antisocial behaviour. There is also the potential of dangerous consequences to him, or to any other small child that he 'plays' with in the same way.