How Many? Two males and two females together?

You can't put multiple males with females, even if they're neutered. I don't know where you're seeing that you can have more than one male with females, but it isn't correct. I've known of only two cases where that has succeeded, and both times, it's been with a huge herd and free range guinea pigs.

Your best bet is to get another female to go with the sow you have, and keep two cages. You may have to put the cages in different rooms if the presence of the sows drives the boars crazy.

Not sure the site but it was a pet one where I saw it on a few posts on Google. I would probably just give them an enclosed area as large as a small room and divide it. The room I have for them that I am working on fits a ton of stuff I'm removing so I could just make a divide in the middle once I set them up there. I clean the cage on a regular basis so a room I could just treat like a bed (fleece) being clean vs a cage may be easier. Do you think this would work? Do piggies smell females in heat from far away? When I brought them in they were right next to her and didn't notice she was there for quite a while vs my cats when they met so I figured they would be OK if I had them inthe same room.

A divider will not keep an in-tact male from a female in heat. A determined male has no problem climbing over dividers. You need separate cages with a locked lid on the female cage

Thanks!! I thought they could not climb... Now I know. I don't want him hurting himself or her if the big one decides to do that so I'll be looking for something to cover the pen with.

bpatters said:

You can't put multiple males with females, even if they're neutered. I don't know where you're seeing that you can have more than one male with females, but it isn't correct. I've known of only two cases where that has succeeded, and both times, it's been with a huge herd and free range guinea pigs.

Your best bet is to get another female to go with the sow you have, and keep two cages. You may have to put the cages in different rooms if the presence of the sows drives the boars crazy.

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Yeah, that's right, the males will fight over the females. If you want a happy guinea pig family, that won't work.