Bonding Introduction Not Going Well - NEED ADVICE

[3_littlepiggies]

I got a pair of 2 1/2 week old sisters a little over two weeks ago and the person I got them from asked if I wanted the last sister because another pig has since had more babies. I thought they would remember each other but it seems that the pair is leaving out the new sister and one of the old pair has started biting us since the new sow was put in their cage. It could be unrelated, but if they continue to exclude the sister should I put her in a seperate cage? Is the biting a sign that the new introduction is not welcomed? They are 5 weeks old and in an 8sq ft cage.

 

[bpatters]

They need to be carefully introduced. Read https://guinea-pigs.livejournal.com/3002707.html.

And an eight square foot cage is not nearly large enough for three pigs.