If it is large and flat and on the underside of your piggy, then it should be harmless and not affect your piggy. However, a pea-sized lump (most commonly found on the back or the rear) would be a cyst, and yes, it could be harmful. If you don't treat it, it could grow bigger and bigger until it pops and then it could get infected. I suggest, if you have a cyst, take it to the vet immediately! However, a method I've never tried before (so I don't guarantee results) if the cyst is still growing is to flush it out with Demisol or Aserbine fluid. Good luck, but I strongly suggest firstly that you go to a vet if it truly is a cyst!
Take it to a vet.
sometimes it is but very rerely
It's unlikely that a change in food would directly cause a lump to develop on your guinea pig's side. Lumps can be caused by a variety of factors, including abscesses, tumors, or cysts. It's best to have a veterinarian examine the lump to determine the underlying cause and recommend appropriate treatment.
I am afraid is may be a sore, type of cancer, or a tumor. You should bring your guinea pig to the vet as soon as you can!
your guinea pig is very elderly now. its propally a tumer or cancer. ask your vet whats wrong, they will probally put your poor piggy down, but it is the best thing to do.
Possibly. You should take it to a vet.
It sounds like an abscess of some kind. The guinea pig should be looked at by a qualified exotic pet veterinarian as soon as possible. Depending on what is causing the abscess it may be easily treated or life threatening
It is spelled "guinea pig". You got it right! :)
I don't have a guinea pig.
guinea pig
A Guinea Pig..
Guinea pig's parents:)