My cat has a hard lump on his belly after squeezing out black stuff.
Updated On September 23rd, 2025
Pet's info: Cat | Mixed Breed | Male | neutered | 10 lbs
My male cat has 2 small lumps on his belly that I was able to squeeze and get a firm blackhead-like substance. Once that was removed I noticed there was still a hard mass underneath that I couldn't remove. So there is still a lump but it seems to be not removed. What could this be?
4 Answers
Most Helpful Answer
Published on April 27th, 2017
There is no way to know what this mass is without seeing your cat. It could be a benign or cancerous tumor, or firm ball of scar tissue, or an abscess. I recommend a visit to your vet for a fine needle aspirate and cytology, where he/she will take a sample from the mass to examine under a microscope to give you a diagnosis and come up with a treatment plan.
2Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on November 12th, 2018
It is very difficult to assess this mass without a hands-on clinical exam. This could be just accumulated body fat (cats collect fat on and in their abdomen), a large hernia or a cyst or abscess. Your will need to take Otis to your veterinarian for an exam. Your vet will be able to tell you what this mass is. I am a bit worried about the area being hairless, he may be licking it a lot, which could be a sign of irritation or pain or overgrooming due to stress.
3Pet Parents found this answer helpful
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Published on June 26th, 2017
His lump is likely a mass. I would recommend getting samples taken from this mass and having your vet send them off for analysis to see if this is something to be concerned about (cancerous) or not. Most masses cannot be identified just by looking at them, which requires analysis of the cells that make up the mass. I hope that everything works out for Kitty and hopefully this is a benign mass that isn't something you need to be concerned about. Best wishes and take care.
1Pet Parents found this answer helpful
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Published on April 27th, 2019
It is hard to tell from the photo but is the mass between your fingers? If so, that appears quite large. Is it associated with a mammary gland? If so, it could be a mammary gland tumor, especially if she was spayed later in life. The A mass is a collection of cells which can be benign (inflammation, benign tumor) or a malignant tumor. The only way to know what it is is for your vet to sample it. Typically we start with a needle aspiration for cytology to the lab. In most instances this can help diagnose whether a mass needs to be removed surgically. Not all masses can be diagnosed this way however and biopsy may be needed. Given the size of this mass, and proximity to the mammary gland, i would have it evaluated. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!
1Pet Parents found this answer helpful
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