My cat's black fur spot is growing. Should I take her to the vet?

Hi, I can see the dark pigmented mass on the photo and I would be more cautious then to say in certainty what any mass is by simply looking at it. If it hasn't been done yet I suggest to go to your vet and consider trying to take a sample. This usually means collecting samples of the material inside the mass with a needle (fine needle aspiration=FNA). Taking a sample and analyzing at it under the microscope or sending it to a pathologist for identification is crucial in most cases for a definitive diagnosis. If FNA is not effective (or if your vet thinks it's not the best option) the next recommendation is usually a biopsy.

Some discoloration/skin changes can be normal with age, however if the area is rapidly changing color, the spot loses hair, is painful, or you notice signs of cuts or infection (open wounds, oozing debris, pain to the touch, etc) it is best to have your vet take a look to rule out issues such as an infection or injury to the area. I would keep an eye on the spot to monitor for any changes, and keep Sweetie from licking or chewing at it with the use of an Elizabethan (cone) collar as needed, as well as keep the area clean and dry. If the spot doesn't improve or worsens, a vet visit is best.

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. This could potentially be just a color change in the hair coat due to the change in season like you said yourself (winter coat). Some animals do develop color changes as they age as well. As long as she is acting normally and there are no changes to the skin, this is likely a normal change. If you are concerned at all, I would recommend having a veterinarian take a look at her so that the most appropriate diagnostic and treatment recommendations can be made.

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. 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!

I would get this checked out by a vet. I worry about these dark-colored masses being melanoma, which can be a serious cancer if not controlled soon enough. It's also possible that this is a benign skin tumor or cyst, but there's no way to tell for sure from looking at it. A sample will need to be analyzed under a microscope in order to tell what type of mass it is. I hope that helps and all is well with the cat.

It is difficult to say for sure from the picture as there is some discoloration artifacts on the photo. If the spot is not raised and is flat, it is likely a spot of increased color (hyperpigmentation). It could be the start of a melanoma so it would be wise to keep a close eye on this. If you would like a definitive answer, I would have your veterinarian take a look at Bella so that the most appropriate recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

Thank you for the pictures, they are very helpful. I see what you mean about the bald spot and black spots. The black spots could be due to flea dirt, and scratching the area could cause the bald spot. Fleas don't live on the cat, they actually live in the environment. They just jump on the cat to feed and then jump off, so he could have fleas even if you don't see any. Make sure he is up to date on his flea treatments if he's not. Should he be up to date on his flea treatments, then this could be due to an injury (the black spots could be dirt), or an infection of the skin. In this case, you have two options. You could take him into the vet to get it examined and diagnosed, or you could watch it. Should you chose to watch it, take him into the vet if it gets bigger, appears infected, or starts to bother him. I don't think any immediate treatment is needed should you chose to watch the area. I hope this helps!