Help please. My 18 month old ds just bit a young girl really badly this morning at our mother and toddler group. He has been biting for a while but we thought he had stopped it. i am finding it very hard to deal with and feel quite low really. i am doing the usual recommended things, be very firm and say 'biting hurts' etc. He was really upset as well and i wouldnt pick him up for a few minutes while i was making a fuss of the girl who was bitten. He is quite physical with children his own age and doesn't interact well with them really. we are a bit concerned although i know it is probably within the bounds of normal toddler behaviour. it's just so mortifying when its your child. He's a lovely, bright, contented child otherwise.