Why are my guinea pigs combat?

I got my two female guinea pigs from somebody and she said they didn't fight. After a week of them living near us, they started to fight. I really need some help!
Watch them to see what starts the fighting you may necessitate to make adjustments with their living arrangements. And girls barney, it may be that the new environment has the tension big in that cage. See if they own a mating season. Or try to find a male guinea pig and see if the combat subsides.
Ten bucks says that they're conflict because they're competing for territory. Girl animals fight each other lately like guys, and in some cases more. Perhaps the cage you hold them in isn't big enough, or maybe they in recent times get on each others nerves. You could give them a bigger space, but the most foolproof opening of getting them to stop fighting is to put them into different cages.
I would say its a dominance thing, theyre trying to set up who is boss, if it gets any worse, split them up, but if theres not serious blood shed they should be fine :)
it sounds like they should be separated just watch them for a while see wot it is why in attendance fighting i had a guinipig then 2 days subsequently got another one but they started fighting over food the new one be ok it was the other one so we ended up having to separate them but when they where on earth out of cage together they fine
They might be aggression to see who is the dominant one
you call for to separate them before they kill or really hurt each other
perchance they just hit puberty and are trying to establish who is in charge

it is for dominance.
is their a male in their? they could fight over the manly.
Answers:    I'm not certain if this is related to guinea pigs, but I bought two female hamsters for my kids. We thought it would be nice to keep them within the same cage to play while we went out for dinner.

When we come home, one of the hamsters actually ate half of the other hamster. No, I'm not kid. It was devastating for my kids, so I would definitely move them into different cages until you bring more information on keeping two females together in one cage.

There can be only ooooooone! HIGHLANDER!
it is just play fighting they are kind of close to dogs they play fight.
let them brawl man
survival of the fittest
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