Common Lumps and Bumps on Pets

What to watch for and when to worry

Veterinarian doing a check-up on a Corgi in clinic
Ron Levine / Getty Images

Finding a lump on your pet can be scary. All lumps should be checked by a veterinarian, especially if your pet acts lethargic, seems to be in pain, or keeps licking or rubbing the lump. Your vet will assess the location, size, firmness, and duration, and may use a needle to aspirate the lump and examine the cells under a microscope. This collection of "lumps and bumps" resources and photos answers some common questions about lumps in dogs and cats.​

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    Portrait Of Dog In Vets Office
    Steven G. Smith / EyeEm / Getty Images

    When used with the words polyp or tumor, pedunculated means a growth on a small stalk. This can be anything from a small skin tag to a larger growth anywhere on the body. These usually benign lumps can often be easily removed. But some can cause problems for your pet. Read on for details about when they might be cause for concern.

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    Asia - September 2006
    Asia - September 2006 - nice pink skin; shows the location of the lump. Lianne McLeod

    A histiocytoma is a benign skin tumor usually seen ​on young dogs. The bright red irritations can appear seemingly overnight, most often on the head, ears or limbs. They rarely cause pain and often spontaneously disappear without treatment. Should you worry about them?

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    lipoma on dog neck - prepped for surgical removal.
    © Janet Tobiassen Crosby DVM

    Fatty tumors called lipomas are one of the most common types of lumps found on pets, especially older dogs and overweight females. Learn about occurrences and treatment options in this FAQ.

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    Lipoma removal surgery © Janet Tobiassen Crosby DVM
    Lipoma removal surgery © Janet Tobiassen Crosby DVM. © Janet Tobiassen Crosby DVM

    This surgical step-by-step shows the removal of a lipoma. Please note: The graphic photos in this gallery may not be appropriate for those who feel squeamish at the sight of blood or surgery.

Please note: This article has been provided for informational purposes only. If your pet shows any sign of illness, please consult a veterinarian as quickly as possible.