this is good to know, two of my three babies were attacked by one of the adults and i wondered why...but they must have misread the play for fighting. i worry that my babies annoy the older ones with all the play so i try and give the adults some time out every so often.2manyrats said:Also, when I've introduced a 5-7wk rat to an adult, the young one will try to get the adult to play with them constantly. Depending on the adult's personality, this can be okay or a terrible thing. Two of my adult males (one's getting neutered right now!) take any attempt to play by a young rat as an attack, and then leave large holes in the youngun.