13 Pictures of Dog Tumors, Cysts, Lumps & Warts

Browsing through pictures of dog tumors and cysts can really get any owner anxious, especially since many of these bumps and masses can be cancerous.

Ideally, any persistent growth or mass on your dog’s body should be checked by a veterinarian. But to initially identify them, here are some pictures of dog tumors and cysts, as well as lumps and warts, observed on various canines.

Note that these pictures weren’t curated to serve as a basis for diagnosis. Your dog should undergo testing (i.e., biopsy) to identify if the mass on its body is malignant.

Pictures of Tumors, Cysts, Lumps, and Warts in Dogs

1. Lipomas

This mass is made up of fat cells. It is commonly found on a dog’s chest or abdomen but may also appear under the skin. It is non-cancerous, soft, and movable.

2. Mast Cell Tumors

Mast cell tumors are either white or pink, and they can be cancerous. They may be covered with hair or ulcerated. 

3. Sebaceous Cysts

Sebaceous cysts are filled with fluid and can appear anywhere on a dog’s body. Most often, they occur inside a dog’s hair follicles.

4. Mammary Gland Tumors

Mammary gland tumors appear next to the dog’s nipple or within it. This may either be cancerous or benign and can be bleeding or ulcerated.

5. Anal Gland Tumour (Adenocarcinoma)

An anal gland tumor may grow within the dog’s anus or next to it. This is cancerous and can metastasize. Typically, this is firm to the touch and is ulcerated.

6. Squamous Cell Carcinoma

Squamous cell carcinoma tumors are highly cancerous and appear raised and red. They are usually found on a dog’s mouth, skin, and nail beds.

7. Melanoma

Melanoma can be black, gray, red, or brown in color, while its size can range from very small to 3 inches in diameter. This typically occurs in areas covered with dog hair and may either be benign or cancerous.

8. Soft Tissue Sarcoma

Soft tissue carcinoma is another cancerous tumor that is soft and firm to the touch. This is mostly found on the dog’s arms, chest, abdomen, and legs.

9. Warts

Warts are benign lumps that may appear individually or in a cluster. They usually look like a small pinkish head of cauliflower.

10. Epulis

An epulis is a growth around or over a dog’s tooth that is the same color as the gums. This is non-cancerous.

11. Inverted Papilloma

An inverted papilloma is a rare type of wart that is firm, dark, and scaly. It has a dot in the center and an irregular surface.

12. Ocular Neoplasia

Ocular neoplasia may be cancerous or not, and it occurs in the form of eyelid mass. This can appear in the upper and lower lid or the eyelid margin. 

13. Abscesses

Abscesses are pus-filled growth commonly found on the skin, between the toes, the body cavity, and the mouth. They can range from small to large.

READ NEXT: Dried Dead Tick on Dog: How to Remove It & What to Do (With FAQs)

Final Thoughts

The pictures of dog cancer lumps, as well as benign tumors, presented above can only do so much in the diagnosis of your canine companion. 

If you find a growing mass on your dog’s body, the best course of action is still to bring them to the veterinarian. Through this, they can be checked and given proper treatment.

Is the growth on your pet similar to the pictures of dog tumors and cysts we shared in this blog? Let us know in the comments.