Mast cell tumors (MCTs) are a type of cancer that can affect dogs, arising from mast cells that play a vital role in the immune system. These tumors are among the most common cutaneous neoplasms in canines and can present in various forms, making it crucial for pet owners and veterinarians to recognize the signs and symptoms early. Understanding the nature of mast cell tumors is essential not only for effective treatment but also for improving the overall quality of life for affected dogs. Diagnosing MCTs can often be a complex process. The tumors may appear as lumps or bumps on the skin, and their appearance can vary significantly—from benign…