2. Mast cell tumor: A type of cancer that starts in the skin or other tissues and can also be found on the rear foot of cats. Mast cell tumors are typically red or purple, often raised and round or oval-shaped, and can be itchy.
3. Soft tissue sarcoma: A type of cancer that can arise in the soft tissues, such as muscle or fat on the rear foot. Sarcomas are often fast-growing and can be painful, appearing as a swelling or mass under the skin.
4. Abscess: A pocket of pus that can form anywhere in the body, including on the rear foot, typically caused by bacterial infections or bite wounds. Abscesses may be painful, warm to the touch, and cause limping or other signs of discomfort.
5. Granuloma: A type of inflammatory response to a foreign object, injury, or infection. Granulomas may appear as raised, firm, red or purplish lesions on the skin, and can sometimes be painful.
6. Cyst: A fluid-filled sac that forms under the skin. Cysts can be benign (non-cancerous) and are usually harmless, but if they become infected or cause discomfort, they may require attention.
7. Claw injury or infection: A puncture wound or injury to the footpad or claw can lead to inflammation, infection, or abscesses, sometimes resulting in swelling or growths.
8. Ringworm: A fungal infection of the skin that can affect cats and cause scaling, itching, and round or ring-shaped lesions on the rear foot.
It's important to note that without proper examination and diagnostics by a veterinarian, it is not possible to accurately identify the nature of the growth on your cat's rear foot. If you notice any unusual growths, swelling, or changes in your cat's behavior or mobility, it's essential to seek veterinary care for a proper diagnosis and appropriate treatment plan.