Wee Little Beasties

I looked in on Pudding to find her on one of her adventurous trips up the tubes to the petting zone when I saw what appeared to be two of her girls attacking her as she tried to enter the petting zone. Perhaps the girls were only trying to get out of the petting zone and were merely pushing Pudding out of the way. But I saw one of the mice turn around and take a nip at Pudding. Maybe the older girls are just making it clear that the zone is their place? I opened up a section of the tube and rescued Pudding but I could not find any noticeable injury.