Lumps in Dogs: What You Need to Know

Discovering a lump on your dog can stop you in your tracks. You might feel it while scratching their ears, brushing their coat, or during a cuddle on the couch. Suddenly, questions rush in: Is it dangerous? Should I be worried? Lumps in dogs are fairly common, and they can mean a variety of things. While not every lump is cause for alarm, it’s natural to feel concerned. This blog explores what pet owners should know about lumps in dogs, what types of lumps exist, and when to call your veterinarian for support.

Why Do Lumps in Dogs Develop?

Dogs can develop lumps for many reasons, ranging from harmless fatty growths to more serious medical conditions. A lump is essentially an abnormal growth or swelling beneath or on the skin. Sometimes it forms from fat cells, while other times it may be caused by inflammation, infection, or abnormal tissue growth.

Common Triggers for Lumps in Dogs

• Age: Older dogs are more likely to develop lumps due to natural cellular changes.
• Breed tendencies: Certain breeds are more prone to specific lump types.
• Immune response: Some lumps in dogs develop after an injury, bug bite, or localized infection.
• Underlying conditions: Skin disorders or tumors can also result in lumps.

Although many lumps in dogs are benign, only a veterinary exam can provide clarity about their cause.

The Most Common Types of Lumps in Dogs

When pet owners discover lumps in dogs, one of the first questions is: What kind of lump is this? There are many possibilities, each with different characteristics.

Lipomas (Fatty Tumors)

Lipomas are among the most common lumps in dogs. They’re made of fat cells and often appear as soft, movable growths beneath the skin. Lipomas are typically benign, but they can grow large and cause discomfort depending on their location.

Sebaceous Cysts

Sebaceous cysts form when a hair follicle or oil gland becomes blocked. They may appear as small, round bumps filled with fluid or debris. These cysts sometimes rupture on their own but can recur.

Warts and Skin Tags

Just like humans, dogs can develop skin tags or warts. These lumps in dogs often appear on the face, legs, or body and are generally harmless, though they can be bothersome if irritated.

Abscesses

An abscess is a painful lump that forms when an infection creates a pocket of pus under the skin. Abscesses often result from bites, wounds, or foreign objects lodged under the skin.

Mast Cell Tumors

Mast cell tumors are one of the more concerning types of lumps in dogs. They can look similar to harmless bumps, but they may be malignant. A veterinarian typically recommends diagnostic testing if a mast cell tumor is suspected.

Where Lumps in Dogs Commonly Appear

Lumps in dogs can develop anywhere on the body. Some areas tend to raise more concern for pet owners.

• Chest and abdomen: Lipomas often appear here.
• Legs and paws: Bumps in these areas may interfere with movement or comfort.
• Neck and face: Cysts, warts, or tumors can show up here.
• Under the skin vs. on the skin: Subcutaneous lumps feel movable beneath the skin, while surface lumps may be more visible.

Because lumps in dogs vary in location and size, a physical exam is the best way to identify them accurately.

How Our Veterinarians Examine Lumps in Dogs

When you bring your dog to Frontier Veterinary Urgent Care, our team uses a systematic approach to evaluate lumps.

Physical Examination

Your veterinarian first checks the size, shape, texture, and mobility of the lump. Noting whether it feels firm or soft, fixed or movable, helps narrow down possibilities.

Fine Needle Aspiration (FNA)

This common diagnostic method involves using a small needle to collect cells from the lump. Your veterinarian can often determine whether the lump is benign or suspicious for cancer based on microscopic evaluation.

Biopsy

In some cases, a biopsy is performed. This means removing a small portion (or sometimes all) of the lump to send to a lab for detailed testing.

Imaging Tools

X-rays or ultrasounds may be used to see whether the lump extends deeper into tissue or to check for other concerns in the body.

Should You Worry About Lumps in Dogs?

It’s natural for pet owners to feel anxious when they notice lumps in dogs. While some are harmless, others may require more attention. The key is not to guess or wait too long. Dogs can’t tell us when something feels wrong, which makes early detection and veterinary input vital.

A lump that changes rapidly in size, bleeds, or causes pain should always be examined as soon as possible. Even if the lump seems small or doesn’t bother your pet, it’s still best to schedule an appointment.

Preventive Care and Monitoring Lumps in Dogs

Even though lumps in dogs can’t always be prevented, you can take steps to catch them early and track any changes.

• Regular Home Checks: During grooming or cuddle time, run your hands gently over your dog’s body. Familiarity with their normal skin and coat makes it easier to notice changes.
• Veterinary Wellness Visits: Routine checkups give your veterinarian the chance to examine your pet for new lumps and track existing ones.
• Keeping Records: If you discover a lump, note the size, location, and date. Taking photos can also help track growth over time.

Monitoring helps ensure that any changes are addressed promptly and provides your veterinarian with valuable information.

How Frontier Veterinary Urgent Care Can Help

At Frontier Veterinary Urgent Care in Greenfield, WI, our team understands how stressful it can be to discover lumps in dogs. That’s why we offer thorough exams and advanced diagnostics to give you answers quickly. Whether your pet needs a fine needle aspiration, imaging, or lab testing, we provide clear explanations every step of the way. We prioritize your dog’s comfort during visits and keep communication open so you feel informed and supported. If you notice lumps in dogs, give us a call at 262-226-2055 to schedule an appointment.