It sounds to me like they aren't getting along, maybe the best thing to do would be to seperate them. Also did you qaurentine the new rat before introducing him to the other one? If not I would suggest removing him and qaurentining for atleast a week then maybe slowly introduce them perhaps through cage bars and such.
Life's not about how to survive the storm, It's about learning how to dance in the rain.
Momma to: 2 human children Audree (2) and Jacob (7 mo.)
3 Doggies: Angel (13), Cricket (1), and Diesel (4mo.)
1 Kitty: Mazey (Age unknown)
2 ferrets - Mocha and Marshall
1 bunny - Ice
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