My dog has changing bumps on legs. Allergies or something else?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 100 lbs
My dog is a 4 year old male boxer/ Great Dane mix. He recently developed these bumps on his legs on his knees. Based on the day they seem to change from firm bumps to deflated bumps. We took him to the vet and they told us it was allergies, but we do not think this diagnostic is right. He seems to be developing more bumps on his legs daily. Just curious if you have a guess as to what this is. Much appreciated! Thanks!
4 Answers
Most Helpful Answer
Published on February 19th, 2019
These growths needs to be checked and analysed as there are many conditions and types of tumors that could look like that. take him 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.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on January 22nd, 2018
Usually these nicely rounded skin bumps are a cyst, or benign growth that are not harmful in any way. However, the truth is that we can't ever tell for sure from just appearance alone. We would have to take a sample and analyze it under the microscope to get a better idea. It's always a good idea to have a vet check it out, but given it's appearance and assuming everything else is going OK with Jake, I don't see a need to rush to the vet. It's fine to just observe it for now. If you notice it grow, start to have an irregular shape, or starts to crack open, then it would be best to have the lump examined sooner rather than later. Below is a good article with more information about skin masses. https://www.petcoach.co/article/lumps-and-bumps-on-your-pet/ I hope that helps and all is well with Jake.
1Pet Parents found this answer helpful
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Published on August 8th, 2017
From the pictures you have sent the "bumps" appears to be a skin growths. There are several types off masses that can grow in the skin of dogs such as cysts and lipomas and mor malignant cancerous tumours. Some are benign and some are malignant, so careful observation is important, as well as having a vet examine it if you are concerned. Since you only just noticed the lumps over a course of a couple months, they seem small and non irritated, I would continue to monitor it for rapid growth, ulceration, changes in mobility, texture or color. Measure the masses 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 Mercy feels better soon. Warmest regards to you both.
1Pet Parents found this answer helpful
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Published on September 12th, 2017
From the pictures you have sent the "bump" appears to be a skin growth. There are several types off masses that can grow in the skin of dogs such as cysts, lipomas, and even some types of cancer. Some are benign and some are malignant, so careful observation is important, as well as having a vet examine it if you are concerned. Since you only just noticed the lump, I would continue to monitor it for growth, ulceration, changes in texture or color. Measure the mass with a ruler so you can compare its growth in a couple weeks time. Rapidly growing masses are more concerning. If the mass has grown in that time frame, becomes ulcerated, infected, or irritated I would have it examined by a veterinarian. I hope that this answer was helpful and more importantly that Ziggy feels better soon. Warmest regards to you both.
1Pet Parents found this answer helpful
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