two male rats

Question
I bought two male rats recently. One of the male rats came from a cage with female rats, the other rat came from a cage with different sex rats. One of the rats is biting the rear end they really don't seem to get on. Does this mean i will have to split them?

Answer
Give them some time to get the pecking order straight. One will be the dominant one and that is normal.
If there is still agression after about 5-7 days, I would look into some techniques that I find helpfull!
Email me with the results in a few days if it is still tense between the two.
Hope I helped!
-Molly