How long a dog can live with a tumor depends on whether the tumor is malignant or benign. If it is a benign tumor, he will not die. If it is a malignant tumor, he can live for about a year, so when a dog has a tumor, he must Find out whether it is malignant or benign. Pay more attention to your dog's physical condition. It is best to take your dog to the pet hospital for regular physical examinations and timely treatment if any conditions are discovered.