Both my children have been bitten at childcare, with bruises to show. Both instances were them not giving up things that another child obviously wanted. And I have not been overly concerned. They were treated with cuddles and icepaks, can't really ask for more.

If it was ongoing, then yes I would be concerned especially if it is the same child doing the biting, or my child/ren were constantly stirring to get that reaction. I can only assume that the parents of the biter also have to sign and incident report so they are made aware of it (I wasn't told either time which child did the biting). and before I get shot down, I do understand that sometimes there is no trigger for the child biting, but I know when my DD went through a biting thing with DS, I was able to pinpoint what was causing it, and distracting her so she found other ways to get over her frustration. I would assume most parents would at least try to work out why their child was biting.