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You are here: myPetSmart.com > Pet Care Library > Ask An Expert > Answered Questions > We Purchased A Pair Of Sibling Male Guinea Pigs Who Had Jus

We purchased a pair of sibling male guinea pigs who had just been weaned and bro...

LoveVarAnimals

Question: 
We purchased a pair of sibling male guinea pigs who had just been weaned and brought to the pet store. We have them in a jumbo rabbit cage. Each night one of the males seems to chase the other male around the cage. They roll into a ball and they appear to be fighting. In the beginning of this chasing scene the aggressive male that does the chasing growls at the other guinea pig who squeals and appears to be scared. Is this normal guinea pig behaviors or should we be worried. I've read they may be establishing who is dominant, but it hasn't let up in a week.
Answer: 

Try having multiple food/water dishes, treats, chews and hide huts so they are not fighting over territory or resources. They should also have deeper bedding, maybe 4-5 inches. If that is not helping to curb the fighting over a one week to ten day time period the pets will need to be separated.