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My senior dog has an egg-sized lump and foot sores. What's wrong?

Updated on September 23rd, 2025

Pet's info: Dog | Greyhound | Female | spayed | 13 years and 2 months old | 70 lbs

My 13 year old greyhound has a mass on her underneath larger tha size of egg. She has also some sores on her tops of her feet.. I sprayed some eco mange on her foot, but the eraser size sores keep coming. Is this common in old dogs?

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 3rd, 2017

Sores on the toes are not common in old dogs, and Lady could have an infection causing the sores. What is concerning is the mass, as in older dogs that can unfortunately be malignant. It could also be a cyst, abscess, or a benign tumor. Any suspicious masses should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the mass to get a sample of it's cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. I would have Lady seen by a vet tomorrow to have this mass examined and diagnosed, as well as the sores, so she can be treated.
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