lump in bottom

  1. O

    Big lump on guinea pig (know what it is?)

    My guinea pig has had this large lump on her far body on the side of her back and we are just wondering what this is, we think it might be a harmless cyst or maybe a tumour. We’ve had her for almost 6 years and she’s never been sick, she’s never seemed to be in pain and hasn’t lost her appetite...
  2. G

    Large lump inside bottom

    My guinnea pig, Pebbles was being bathed (monthly occurance) when I noticed a somewhat large lump of skin comming out of his anus and just below it thee is no behaviour change and he seems to be pooing just fine I have noticed while I've had him out, I'm not sure what have caused this or why...