Gather as much information as possible by e.g. keeping a journal on the behaviour or changes occurring in your dog. Pay attention to the following symptoms:

• Swellings or lumps that do not disappear
• Wounds that do not heal
• Weight loss
• Loss of appetite
• Abnormal bleeding or discharge (e.g. from the nose)
• Unpleasant odor (e.g. from the mouth)
• Trouble swallowing or chewing
• Loss of energy or stamina
• Abnormal stiffness or limping
• Difficulties breathing or urinating/defecating