My dog has a red lump on her toe. Could it be cancer? When to worry?

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. There is no way of knowing what it is just based on its appearance. Common tumors in this region include melanomas, squamous cell carcinomas, mast cell tumors and soft tissue sarcomas, among others. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good night!

Hello and thank you for using Petco Pet Education Center, formerly Petcoach. A growth like Spike has on his toe could be related to infection, a benign mass like a cyst, but unfortunately it could also be a cancerous growth. It would be best to schedule a visit to your veterinarian so that he or she can obtain a small needle aspirate sample from the growth and decide if it is cancerous. A lot of growths on the toes can be cured if removed surgically. I hope for the best outcome for Spike!

I see what you mean about the lump, it is quite big and red. Bruce is a young dog, so the chances of it being malignant are not high at all. I would be wondering if it is from an insect bite, a cyst, or potentially a foreign body in it like a grass seed. I do think it's a good idea to get checked out by a vet tomorrow, but I would not have a digital tumor high on my list as a potential diagnosis. I hope this helps!

This is either a tumor, or infection. Infections are common in this area, because things like thorns and grass awns can get stuck in-between the toes. Tumors are a possibility in this area as well. We worry about certain types of tumors on the toes, because they tend to spread easier than others. Since Toby is also acting lethargic, I am more worried about cancer, or a systemic infection. Considering this, it's best to have Toby seen by a veterinarian as soon as possible in the next day or two. The vet will be able to quickly narrow-down the cause of this and start providing treatment to make him feel better. They will also be able to give you various diagnostic and treatment options. I hope that helps and Toby feels better soon.

From the picture this looks to be a mass. I would recommend having it evaluated by your family vet for needle sampling with cytology. That way they can determine if this is a mass and if so if it needs to be surgically removed (benign vs malignant). The toe is a tricky location so having it evaluated while it is small would be best. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!

Hello, and thank you for using PetCoach. I’m seeing a red, round, raised, hairless mass. This appearance would make me primarily suspicious of either a [histiocytoma](https://www.petcoach.co/dog/condition/histiocytoma/) or a [mast cell tumor](https://www.petcoach.co/dog/condition/mast-cell-tumors/). The only way to tell for sure what this lump is, is via cytology. Your vet will get a small sample of cells with a needle and examine them under a microscope to determine what the mass is. I definitely recommend having this done as soon as possible. A histiocytoma is a benign mass that tends to spontaneously resolve. A mast cell tumor would be a concern, and should be surgically removed as soon as possible. I hope this helps!

I recommend booking an appointment with a veterinarian to have Paisley's toe evaluated, as you are correct that it is likely causing her discomfort, but she may not be showing it. Pain medications meant for humans can be very dangerous (and even deadly) for dogs, so I do not recommend giving any to your pup without consulting with your vet. The bump you are seeing could be a mass, or it could be a skin lesion caused by bacterial, parasitic or fungal infection, dietary or environmental allergies or sensitivities, or could be a combination of the above. I recommend making an appointment to have Paisley seen by your veterinarian to help determine the cause of the bump you’ve noticed and to make sure it is treated appropriately. The vet will likely want to look at a sample from the area under the microscope to determine what is causing the bump and to provide treatment. In the meantime, I recommend putting an e-collar/cone on her to help reduce the risk of infection from her licking at the area.