I have just picked ds up from nursery this afternoon and noticed when I put him in the car that he had a bite mark on his cheek. I have asked him where it came from and it appears that a boy at his nursery bit him when he took a toy car (they were playing on the floor together). DS did tell a teacher and the other boy did make up with him but the mark is still there, purple and really obvious what it is. I am not upset by the fact that he argued with another child (as they all do this from time to time), more annoyed that the mark is quite severe and the nursery staff did not tell me why he had got it. Should I do anything more about it or just let it go? I don't want to make a big issue out of it but feel that snatching toys is one thing but biting is quite agressive behaviour by comparison. Just a bit confused now as I still feel rather new to all this pre-school malarky and don't want to offend anyone but want to get my point across.