At this age, a skin mass that looks like this is most likely a benign (not cancerous) tumor called an epithelioma. On rare occassions, masses that have physical characteristics that resemble epitheliomas can also be a malignant type of mass called an adenocarcinoma. As such, as for any growth present on a dog, a veterinary visit is recommended. For more on epitheliomas and adenocarcinomas, please refer to the article below. If you still seek further information, please visit our
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