And we have a bite

Yesterday was the fourth day of school and Caleb got bit on the hand... Bit!! OMG, I wasn't sure how to react at first when the teacher told me. She explained that the little boy wanted to play with a toy that Caleb had and Caleb wouldn't share so the little boy bit Caleb on the hand. There was no break in the skin and didn't leave a bruise so the teacher didn't write out a formal complaint, but would if I asked her to. She told me that this happens sometimes in a preschool setting and especially the first week of school.... I'm thinking, wait this is only the first week of school, aren't most kids on their very best behavior?? What's going to happen the second week of school??

I guess I should just be happy that it wasn't my child that bit someone...