Lumps and Bumps on Cats and Dogs: What Owners Need to Know

March 25, 2025

Finding lumps or bumps on your dog or cat can be alarming. Is it something harmless, like a lipoma (benign fatty tumor), or could it be something more serious? Many pet owners face this question, and while not every lump is cause for concern, it’s always best to have it checked by a veterinarian. 

Early detection and proper diagnosis are key to managing growths on your pet’s body—whether they’re harmless lipomas or aggressive tumors. In this guide, we’ll discuss what these lumps might be, when to take action, and what treatment options are available.

What Are Lipomas?

Lipomas are benign (non-cancerous) tumors made up of fat cells. They are the most common type of lump found on dogs and can occasionally occur in cats as well. These soft, movable masses usually develop just under the skin and tend to grow slowly over time. Lipomas commonly form on the torso, legs, or neck, though they can appear anywhere on the body.

While lipomas themselves are not harmful, they can sometimes grow large enough to cause discomfort or interfere with movement. This is especially true if they form near joints or vital structures. In rare cases, a more invasive type of fatty tumor, called an infiltrative lipoma, can grow into muscle tissue and require surgical removal.

Certain breeds, such as Labradors, Dobermans, and Miniature Schnauzers, are more prone to developing lipomas, particularly as they age. Though these tumors are typically harmless, any new lump should be evaluated by a veterinarian to rule out more serious conditions.

When to Be Concerned About a Lump

Not every lump is a cause for alarm, but there are certain signs that indicate a mass should be checked by a veterinarian as soon as possible. You should be concerned if:

  • The lump is rapidly growing. Fast-growing masses are more likely to be aggressive tumors.
  • It feels firm, fixed, or irregular. Unlike soft and movable lipomas, cancerous lumps are often firmer and attached to underlying tissues.
  • There’s redness, swelling, or ulceration. Inflamed or open sores can indicate infection or malignancy.
  • Your pet is in pain. If the lump seems to cause discomfort when touched, it could be pressing on nerves or other sensitive structures.
  • Your pet is showing other symptoms. Lethargy, weight loss, or changes in appetite can sometimes accompany more serious conditions like cancer.

The best way to determine whether a lump is benign or malignant is through a veterinary exam and diagnostic tests such as fine needle aspiration or biopsy. If you notice any concerning changes, early intervention is key to ensuring your pet’s health and well-being.

Can You Treat Lipomas at Home?

While it’s understandable to want to manage your pet’s health at home, there’s no proven home remedy for eliminating lipomas. Since these fatty tumors are benign, they don’t necessarily require treatment unless they become problematic. However, maintaining a healthy weight through proper diet and exercise may help reduce the risk of new lipomas forming or existing ones growing larger.

Some holistic approaches, such as turmeric supplements or herbal remedies, are sometimes suggested for lipoma reduction. However, there is no strong scientific evidence proving their effectiveness. It’s always best to consult your veterinarian before trying any home treatments to ensure they are safe for your pet.

If a lipoma grows too large, causes discomfort, or interferes with movement, surgical removal is the only effective treatment option. In some cases, liposuction may also be used, though this is less common in veterinary medicine.

The Cost of Lipoma Removal

Two dogs standing on the beach with water in the background

The cost of removing a lipoma varies depending on factors such as the tumor’s size, location, and complexity of the surgery. On average, pet owners can expect to pay anywhere from $200 to $600 for a simple lipoma removal. However, if the lipoma is large, located in a difficult area, or requires specialized surgical techniques, the cost can rise to $1,000 or more.

Additional expenses may include:

  • Pre-surgical tests (such as bloodwork or a biopsy) – $50 to $200
  • Anesthesia – $75 to $300
  • Post-surgical care (medications, follow-up visits) – $50 to $150

If the lipoma is infiltrative or suspected to be cancerous, more extensive procedures, such as advanced imaging (X-rays, ultrasound) or pathology testing, may be required, further increasing the overall cost.

While surgery is the most effective treatment for problematic lipomas, many veterinarians recommend monitoring the lump before opting for removal, especially in older pets where anesthesia carries additional risks. Discussing the best course of action with your vet will help you make an informed decision that prioritizes your pet’s comfort and well-being.

Lucky’s Story: A Close Call

Lucky was a lovable yellow Labrador who had always been a little on the lumpy side. One day, his owner noticed a new mass forming on the left side of his neck—about the size of a golf ball. Concerned, they brought Lucky to the clinic to have it examined.

This particular area is critical because it’s close to the submandibular lymph nodes, which can become swollen due to infections, inflammation, or even lymphoma. After a thorough examination, we performed a fine needle aspiration to analyze the mass. Thankfully, the results confirmed it was a lipoma—a benign fatty tumor.

While lipomas themselves are typically harmless, they can sometimes grow large enough to interfere with a dog’s movement or comfort. In Lucky’s case, the tumor was closely monitored to ensure it didn’t become a problem. His owner’s quick action in bringing him in for an evaluation helped provide peace of mind and ensured Lucky stayed happy and healthy.

Conclusion

If you find a lump on your dog or cat, don’t panic—but don’t ignore it either. Whether it’s a small fatty deposit or something more concerning, early evaluation by a veterinarian is essential. Some benign tumors can simply be monitored, while others may require treatment or removal. Advances in veterinary medicine mean that even cancerous tumors can often be managed effectively with surgery, radiation, or chemotherapy. The best thing you can do as a pet owner is stay vigilant, check your pet regularly, and seek professional advice whenever you notice a new growth. Your quick action could make all the difference in your pet’s health and quality of life.