Found a Lump on Your Pet?
You're giving your dog a tummy rub or cuddling your cat on the couch when you feel it.
Found a Lump on Your Pet?
A lump.
Suddenly, you're asking yourself: How long has that been there? Is it serious? Should I be worried?
The good news is that many lumps and bumps are harmless. The not-so-good news is that some aren't. And unfortunately, there's no reliable way to tell the difference just by looking at them or feeling them.
That's why we always recommend having any new lump checked by your veterinarian.
Not Every Lump Is Cancer
Pets can develop lumps for many reasons as they get older. Some common causes include:
- Fatty lumps (lipomas)
- Cysts
- Warts
- Skin tags
- Inflammation or infection
Many of these are completely benign and may never cause a problem.
However, some lumps can be cancerous, and even experienced veterinarians cannot determine exactly what a lump is simply by examining it. A lump that feels soft and harmless may be something more concerning, while a lump that looks alarming may turn out to be benign.
That's why testing is so important.¹²
How Do We Find Out What a Lump Is?
One of the most useful tests we perform is called a Fine Needle Aspirate (FNA).
This quick procedure involves using a small needle to collect a sample of cells from the lump. Most pets tolerate it very well, and in many cases it can be performed during a standard consultation.
The cells are then examined under a microscope to help determine what the lump may be and whether further testing is needed. Sometimes a biopsy is recommended to provide a definitive diagnosis.¹²³
Why Early Detection Matters
When it comes to lumps, waiting isn't always the best option.
If a lump turns out to be something serious, early diagnosis often means:
- More treatment options
- Simpler surgery
- Better outcomes
- Less discomfort for your pet
Even when a lump is benign, having an answer provides valuable peace of mind.
What Should You Watch For?
We recommend booking an appointment if you notice:
- A new lump or bump
- A lump that is growing
- Changes in shape, colour, or texture
- Bleeding, ulceration, or discharge
- A lump that seems painful or bothers your pet
A good rule of thumb is:
"If you can feel it, we should check it."
The Bottom Line
Most lumps and bumps are nothing to panic about, but they are never something to ignore.
Regularly running your hands over your pet during pats, grooming, or cuddles is one of the easiest ways to spot changes early. If you discover a new lump, don't wait to see what happens. Our team can assess the lump, discuss the most appropriate diagnostic options, and help ensure your pet receives the best possible care.
Found a lump on your pet? Book a consultation with the team at Flemington Veterinary Hospital. Early detection could make all the difference.
References
- Brooks W. What's That Bump? A Guide to Lumps and Bumps on Your Pet. Veterinary Information Network (VIN) Veterinary Partner Client Education. May 2026.
- Sharkey LC. Common Masses in Dogs & Cats. Clinician's Brief. 2009. [cliniciansbrief.com]
- Cruz-Rincon S. Histopathology in Pets. Veterinary Information Network (VIN) Veterinary Partner Client Education. October 2023.
- VIN Dermatology Consultants. Skin Biopsies in Dogs and Cats. Veterinary Information Network (VIN) Veterinary Partner Client Education. July 2026.