Canine mast cell tumors (MCTs) are among the most common skin cancers found in dogs, and they can pose significant health challenges for our furry companions. Understanding these tumors is crucial for dog owners and veterinarians alike. Mast cells are a type of immune cell that play a role in allergic responses and inflammation. When these cells become cancerous, they can form tumors that vary widely in behavior and aggressiveness. MCTs can appear in various forms, from small, benign lesions to aggressive tumors that can metastasize to other parts of the body. Because these tumors can present differently, recognizing the signs and symptoms can be vital for early diagnosis and…