Various changes in a pet’s behavior or appearance, such as those listed below, might indicate the development of cancer. These are not always signs of cancer; however, paying attention to such changes and bringing them to the attention of your veterinarian as soon as they occur can increase the chance that a cancer will be detected and treated at an early stage.

• A growing or changing lump

• Swollen lymph nodes

• Sudden abdominal swelling

• Unexplained bleeding from the mouth, nose, or genital area

• Difficulty when breathing, chewing, swallowing, urinating, or defecating

• Persistent sores or swelling

• Unexplained bad breath or other odor

• Dry cough

• Lowered stamina

• Recurrent vomiting or diarrhea

• Loss of weight or appetite

• Lack of interest in physical activities

• Indications of physical discomfort, such as lameness or stiffness