Dog's toenail fell off, rapidly growing mass on toe. What is it?

Unfortunately, I can't say that I like the looks of that. Masses like these associated with the nail bed can often be problematic in both structure and physiology. structurally, they can grow larger and start to make it difficult for Lily to walk normally without pain. Physiologically, there are types of toes masses that malignant, both locally and systemically, and others that are benign. The first thing I'd do if you are interested in doing a work up, would be to request your vet obtain a biopsy or cytology of the lesion to assess what it is. Depending on the result and how fast they believe the lesion will grow, your vet can make appropriate suggestions. In the majority of toe masses that have any potential at all for spread, typically the toe (or toes) are amputated. Dogs get along fine and usually don't miss a step, even in older pups like Lily. Anyway, hope this helps.

It is very difficult to tell from these photos, it is possible that your dog's toe nail became slightly torn/detached from the underlying nail bed and you are seeing the separation here. We can, however, occasionally see nail bed tumors. I would recommend a visit with your vet to better examine the area. If it is a loose toenail they may need to trim it back to make it more comfortable until it grows back in normally. This can be very tough to do at home because often these guys are painful so trimming the nail back can be really difficult without skilled help!

Dogs do get malignant nail bed tumors. This area does look angry and it certainly could be a malignant tumor. If you wish to be cautious you can get a second opinion from a veterinary oncologist or another veterinarian. It's difficult to get a good sample from this area so your veterinarian is correct to recommend a toe amputation. Since Hailey is young there is a chance that this is an infection also. You could try a course of antibiotics for a couple of weeks to see if it heals. If the mass continues to enlarge then I would definitely remove the toe as if it's a malignant melanoma they do spread and it could go into her lungs which is a life threatening condition. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Hailey.

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. 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 her evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good night!

I hate to hear this is happening to your pup! I recommend to have her examined by the veterinarian. Skin masses can be many things but red raised masses are especially concerning for a skin cancer called a Mast Cell tumor. Your veterinarian will need to collect a sample of cell to examine under the microscope to determine what this is and if further treatment is needed. another common reason for a lesion like this is a foreign object trapped under the skin. Fox tails have a tendency to do this and generally need to be removed and the lesion lanced. Have this checked out soon. Protect the area from licking by having Dog wear an elizabethan collar at all times. I hope this helps.

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. Judging from the mass and the fact that Gunner is a young dog, I would suspect that this is what we call a histiocytoma. These typically resolve on their own but can be surgically removed to help speed up the resolution of the mass. If it is continuing to grow and if it bothers him, I would recommend having this removed surgically and then send it out for further testing to make sure this is not a cancerous mass. I hope this helps guide you in the right direction. Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

Actually Sarge has two masses growing on his leg, the big one attached to his paw and the other is near the stifle. Apparently both masses are bothering him now as he is licking and chewing on the masses. This will need to be examined by a vet as these are likely tumors that may be benign but also malign. The mass on the foot will likely need to be removed, if only to avoid it getting infected or injured. The lesion on it may be from licking but could also be from growing and the skin not being able to expand any further. I suggest you make an appointment with your veterinarian for an exam and a biopsy (usually a fine needle aspirate) which will aid in determining whether these masses are concerning.