Pay attention to your canine’s eating habits. Some canine owners become busy and don’t notice their dog’s disinterest in food immediately. Make a habit of glancing into your dog’s bowl and noticing if they’ve finished their last meal. Take note of any additional signs. Loss of appetite in dogs is often accompanied by other symptoms in your canine. Note if your dog appears lethargic, experiences vomiting or any other abnormal behavior. Request that your canine be examined. Call your vet and schedule an appointment. Ask your vet to conduct a physical exam and blood tests if necessary. Be prepared to collect a fecal sample to assist in diagnosis. Share all symptoms that your dog has been experiencing with the vet.