My almost 3 year old male Jack Russell is in perfect shape. About 3 weeks ago I noticed a small pea sized lump or growth on his butt. At first my husband and I thought it was an ingrown hair or pimple. We tried to squeeze it but it would not drain or pop. I brought him to the vet today since it has been getting larger over the last week and our vet says he needs surgery to have it removed. I can not remember what kind of growth he said it was, but he believes that it will not go away on its own and that it is either a pricker or something in his butt that has caused infection or that it could be cancerous. He said a biopsy needs to be done and we will get the results in about a week. Needless to say I am EXTREMELY worried. Has anyone ever had anything similar happen to their JR's. I am curios if cancer is common in them and what the odds may be that he is ok.