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My dog has red splotches, bleeding gums, and a growing tumor. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 12.8 lbs

Taking my dog in tomorrow but since it’s Sunday...I just noticed while brushing him, my dog has red splotches on his skin I’m various places all over his body. He has thin hair so I can see his skin. He has a tumor on his front elbow that the vet saw last year and didn’t think needed removing but I think it has recently grown. I also noticed his gums seems to be bleeding around a couple of teeth.

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1 Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on April 15th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Coco! I am very worried about Coco. The most common cause for bruising of the skin and gum bleeding are low platelets. This can be caused by loss, destruction or the body stopped making platelets. Common causes of destruction is immune, infectious (tick borne), secondary to medications, recent vaccination or even cancer. I recommend that Coco be seen immediately and have blood work done. Low platelets are treated with immunosuppressive doses of steroids and doxycycline. Animals with low platelets can become anemic which is life threatening. I wish you the best!

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