Biting Female Guinea Pig Biting Other Female Guinea Pig's Ear

[imaanzg]

I have two bonded female guinea pigs that seemed to get along perfectly fine until today. I noticed that one of my guinea pigs kept chasing the other one and biting her ear. I thought maybe it was because they were too crowded, but I let them in their playpen, and the biting seemed to increase. They're the exact same age and size. Someone please help!

 

[Mastershroom]

A couple of my pigs have little notches in their ears, presumably from one of the other pigs nibbling at it. I've never directly witnessed any of them doing it, but I know they didn't all start off with notched ears.

Anyway, unless it gets to the point of blood being drawn, you probably don't need to intervene.

 

[Rywen]

Sometimes females get more aggressive when they are in heat. As long as there is no blood drawn it's usually okay.