Guinea pig fighting

Em03

New Born Pup
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Jan 30, 2025
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Hi,

I have 2 bonded female guinea pigs, Jenny and Blair, who are now 8 months. They have always been fine together and no issues but the past week we have noticed bites in Jenny’s ear which have gotten progressively worse to her now bleeding quite badly from the area. For now we have separated them both but we’re unsure of what could have caused this and why the sudden turn in behaviour. We have never seen or heard them fighting before. We have also just adopted 3 more girls, Fudge, Rita and Mango, they are 4 months old. During bonding Jenny has been fine around them but Blair has been chattering her teeth and trying to bite so again we separated her. Could we bond Blair with another so she isn’t alone or after some time will the aggressiveness settle down? We don’t know what to do as we don’t want her to be alone but it also isn’t safe for her to be around them right now? Has anyone experienced this before or have any advice? Thank you
 
Welcome to the forum

How big is your cage? Five sows would need a 2x8 c&c or a cage if 240x60cm

Do all hides have two exits?
Is there five (or more) of everything in the cage?
How long have they been together?

Aggression in a failed bond will not settle down in time. In fact it would get worse so if you hav concluded the bonding has failed then she would need to remain away from the others.

If the bonding between all five has definitely failed and Blair can’t be with the main herd, then you can of course attempt to separate one of the others out to bond with Blair - she must be compatible with whoever she goes with though for it to work.

 
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