My rat keeps biting my other rat, how do I get her to stop?

I have a rat who keeps biting/attacking her sister. Her sister will start squeaking, which is what leads me to believe that she is hurting her and not just playing (is this the case?). I remove her from the cage when she does it but that isn't working, and I'm worried and don't know how to get her to stop. Any tips? Are they just playing?





As a side note, I take them out every day for at least an hour with quite a few things to play with, and they have a pretty large cage. Is that not enough?My rat keeps biting my other rat, how do I get her to stop?
JESSICA'S answer is the right answer. Rats, especially rats that young, engage in a lot of dominance play to establish their pecking order. This includes wrestling and power grooming. Some of the ';biting'; is probably just the one rat power grooming the other or just a playful nip. Rats groom themselvse and their rattie friends by not only licking, but by nibbling. A common way rat owners differentiate between dominance play and real aggression is to think of it like this: no blood, no foul. Unless the one girl is biting her sister to the point where she bleeds or injures her in another way, you don't have to worry. It's normal and it should calm down as they get older.My rat keeps biting my other rat, how do I get her to stop?
REVVEREND, THE FIRST ANSWER, THAT IS WRONG WRONG WRONG, THE FLEAS IN THE RATS CARRIED IT, NOT THE RATS
wtf is up w/ the 1st answer?





how old are they?
Remember that all rats, even siblings, have to establish a pecking order. One will always be more dominate than the other. To me, it's sounding like your dominate rat is putting her sister in her place. The squeaking is normal, but unless she's actually causing injures, don't remove her from the cage. Dominance needs to be established and maintained for them to have a good relationship. Any pair or group of rats will display this sort of behavior, regardless of age (though this behavior DOES calm down more as they age) and regardless of sex.
First answer, WRONG! Seperate them from each other. But be sure to give them both lots of toys so that they won't get bored on their own.