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What are the key signs and symptoms that my dog might have a tumor?
Updated on September 23, 2025
Pet's info: Dog | Maltese | Female
How would I know if my dog has a tumour?
1 Answer
Most Helpful Answer
Answered By Stacey Anstaett, DVM
Veterinarian
Published on June 11, 2018
It depends entirely on what type of tumor it is.
A skin tumor or some soft tissue tumors under the skin, you can feel and see.
Tumors in bones will cause lameness.
Nasal tumors cause nasal discharge and bleeding from the nose.
Tumors in the abdomen or chest don’t often show obvious signs. Depending on the type of tumor, your pet may have some chronic, gradual changes (such as vomiting, diarrhea or a cough), or may suddenly collapse due to internal bleeding.
If your dog is having specific symptoms, let us know and we can try to help you further!
Thanks for using Petco Pet Education Center, formerly Petcoach!
A skin tumor or some soft tissue tumors under the skin, you can feel and see.
Tumors in bones will cause lameness.
Nasal tumors cause nasal discharge and bleeding from the nose.
Tumors in the abdomen or chest don’t often show obvious signs. Depending on the type of tumor, your pet may have some chronic, gradual changes (such as vomiting, diarrhea or a cough), or may suddenly collapse due to internal bleeding.
If your dog is having specific symptoms, let us know and we can try to help you further!
Thanks for using Petco Pet Education Center, formerly Petcoach!
1Pet Parents found this answer helpful