One of my pigs, George, is having a lump removed this Friday. You can see it quite clearly in the pictures. Now this lump seems different to a regular fatty lump and that's why my vet and I have decided to remove it. It's quite large, about an inch and a half in diameter, an irregular shape, on his lower back/side above his stomach. My vet said normally they would leave lumps in guinea pigs alone but this one is apparently too hard to be just a fatty lump and that is why the vet wants to remove it and have it analysed. He said it was totally my decision and that he would rather do it now while he was still young (he's 3) rather than risk it grow and remove it with more risk when he's older. So he's having it off! I'm a little bit worried but at 1.4kg he's quite a strong hefty pig so fingers crossed he'll pull through OK! I need a little bit of advice from someone who's been through this before! Will they need to put a collar on him and will I need to keep him separate from his brother for a while after the op? They're identical twins so I'm a little bit worried about separating them but if it's for the best I'll do it. Spare cage at the ready!