Why does my boxer have a large lump on his butt? What should I do?

Hello If possible a photograph of this lump would be helpful. It could be a lipoma (a harmless fatty tumor) but Boxers are known for developing mast cell tumors on their skin. Those types of tumors need to be removed as they can cause issues with the GI tract and even anaphylactic reactions.

Any suspicious lumps should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of its cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. Once the cause of the lump is diagnosed, the vet can discuss treatment options if needed. I'd give Lilly's vet a call in the morning to make her an appointment.

This kind of lump/growth needs to be ideally assessed by your veterinarian to have a definitive and specific answer. Usually there are two ways your vet can do that a part from examining it directly during physical examination. A biopsy can be taken under local or general anesthetic, otherwise a smaller sample through a fine needle can be aspirated (this technique is called FNA= fine needle aspiration). Differentials include skin cysts, infections, benign or more sinister type of tumors. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

This lump needs to be checked and analysed as there are many conditions and types of tumors that could look like that. take Jj to the vet, they will perform a fine needle aspiration on the growth and send it to the lab for analysis. when the result comes, the vet will advise what needs to be done according to the diagnosis.

This is indeed a mass. Make a note of how big it is now and watch it for a week or two and then compare to the size it is now. If it grew, or started to ooze or bleed, it needs to be examined by your vet and possibly removed. If it is just a wart, it can remain, unless it causes trouble.

This could be a severely abscessed anal gland/sac or a tumor or a perineal hernia. This can only be diagnosed with a hands-on exam. You should have it examined by your veterinarian, as it is not possible to distinguish these by just looking at a photo. An abscess can usually be treated with antibiotics and/or be lanced, and a hernia may have to be fixed surgically. To identify a tumor, your vet may want to do a fine needle aspirate (he takes some material from the bump with a needle and then looks at it under the microscope) to determine whether the mass is concerning.

I am so sorry to hear that Boxer has this concerning mass. Because you have noticed the mass over a period of a few months and because it is bleeding repeatedly I would have it seen by a veterinarian. There are many possible causes for masses in a dogs skin including foreign bodies, bacterial infections, cysts, and several types of benign and well as malignant tumours. In the meantime, place an e-collar, or cone, on Boxer to prevent him from biting or scraping the mass. This will hopefully stop him from bursting it again, as well as stop him from possibly infecting the area. Measure the mass with a ruler so you can compare its growth in a couple weeks time. Rapidly growing masses are more concerning. I hope that this answer was helpful and more importantly that Boxer feels better soon. Warmest regards to you both.