I got 2 little guinea pigs the week before Christmas. I was told they are both males. I started to question this because the one constantly sways his hips side to side and makes a rumbling sound to the other (I read this can be a mating call? Or is it just him trying to show dominance?) Whenever this happened the other would run at him and chase him away. Yesterday I got home and both were chattering their teeth, by the time I walked over to them they were rolling around attacking each other and there was a small amount of blood in the cage ☹ I separated them immediately and called a vet for advice. They told me to keep them separated overnight, clean out the cage in the morning to remove scent and try to bring them back together. The second I put them back together the went for each other again. They are now in the same enclosure with a perspex divider. Vet appointment booked to check if they are both male. Has anyone had similar and managed to bring them back together? It's not looking good. They also have very different personalities, one is very timid (and looks like he wants a nice slow quiet life!) the other is really confident, vocal and likes to run around.
Hi and welcome!
You have likely two boars, but they have sadly had a fall out because they are very much not a character match and have obviously not been able to agree about who should be the leader/
There is nothing you can do to change their personalities or make them like each other. Unfortunately, pet shop or for sale breeder piggies are chosen for looks and not for who they hang out with most; and unlike good welfare standard rescue guinea pigs, they are also not personality matched. Once blood has been drawn in a serious fight, you have had it.
Here is our illustrated sexing guide, which we recommend to use with any new guinea pig as soon as you bring them home:
Illustrated Sexing Guide
Here is our detailed boar information, which you should find very helpful in working out which way forward is best for you:
A Comprehensive Guide to Guinea Pig Boars
Boars: Teenage, Bullying, Fighting, Fall-outs And What Next? (incl. all possible options after a fall-out)
Guinea pig behaviours, so you can learn to understand what is going on:
A - Z of Guinea Pig Behaviours
Dominance Behaviours In Guinea Pigs
Bonding and Interaction: Illustrated social behaviours and bonding dynamics (Your boys have unfortunately failed in the ca. two weeks post new group estalishment dominance phase, which is the last chapter but the guide contains l more typical boar interactive behaviour with videos).
The access link to our full information resource which you may find very useful as it covers a lot more areas in practical detail and with more in-depth advice than we can necessarily give in any post. You may want to bookmark this link, browse, read and re-read at need:
Cage Size Guide
I am very sorry.