What is a frequently noted sign of cancer in aging pets?

Unexplained weight loss is a frequently noted sign of cancer in aging pets due to the metabolic changes that occur as a result of the disease. Many cancers can lead to a catabolic state, where the body begins to break down its own tissues for energy, resulting in weight loss despite normal or even increased appetite in some cases. Additionally, tumors can impact the way the body processes nutrients, which may lead to further loss of weight and muscle mass.

In older pets, weight loss might be more noticeable because they already have a tendency to lose muscle mass with age. Therefore, it is crucial for pet owners and veterinarians to pay close attention to any significant or unexplained changes in weight, as they could signal underlying health issues, including cancer. It's essential to act on these signs promptly for diagnosis and treatment options.