even though I handled them every other day from a week old, and one was so relaxed last week it fell asleep on my friend's hand. They are now 4 weeks old and just becoming properly independent but really don't want to be caught, so I was passing treats around to the adults in the cage to entice them out and suddenly the little boy shoots out of the nest and nips me and runs off (not a nibble to try if I was edible, a proper nip to the soft pad of my finger) . So I thought perhaps he is going to be like his dad (although early for teenage behaviour, I thought, he is still very small). Five minutes later dad is happily eating from my hand and little sister comes out, sniffs the food, my finger, bites me and runs off. So much for my regular handling from and early age strategy. Why all this nipping? I understand the dominant male defending his territory, I understand a doe wanting me away from her nest with young, but coming up to me specially just to bite me, that's just plain mean! and I had come bearing treats! Anyone else had probs like this before? Perhaps my mice are a mean strain?? They are ever so cute tho....