biting skin off

I've been happy with my piggies and they are very healthy and getting everything they need. Even though both are unneutered boars but I've been convinced they're best buddies, haven't been fighting, they sleep in the same cuddle bed every night despite there being 10+ other different hideys...

For a couple of years she has had quite a big cyst on her side, we took her to the vet and the vet said she would be fine. It flared up really bad last week so we took her to the vet and the vet said the surgery would be extremely risky for her so we decided to leave it, today I noticed her...

Hi. I have a 1-1/2 year old guinea pig, her name is Dahlia. She is paralyzed, but we don't know the reason for this. Her hind nails are very thin and slim, and are extremely white, not like regular guinea pig nails. She has been biting off the skin on her hind legs, and they are raw and bloody...