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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 6 years and 10 months old | 65 lbs
My dog has a lump on his gums that was between 2 teeth but has now grown to.the size of.a nut and has dark purple.dots on it. I now.see, after 6 months of not looking, that a new lump is growing out of the original lump. What does this sound like to you? I should also state he is almost 7 y/O and dying slowly (but too fast for me) from a bum heart. He was given 2 weeks to live just over a year ago.
2 Answers

Answered By Ricardo Fernandez, DVM
Veterinarian, Veterinary Oncology Resident
Published on April 23rd, 2018
Answered By Ricardo Fernandez, DVM
Veterinarian, Veterinary Oncology Resident
Published on January 21st, 2018
Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck!
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