Medical issues common to Boxers include hereditary conditions such as hip dysplasia, certain forms of heart defects and certain forms of cancer. A reputable breeder vs. a "puppy-mill" Boxer is recommended. All dogs should get all necessary and regular vaccinations, have regular veterinarian checkups and teeth cleanings, along with a good diet and plenty of exercise. The average lifespan of a healthy Boxer is 9–11 years. Many people get a Boxer and then may give it to a rescue or pound because they are not ready or willing to devote the time that Boxers require for training and attention. A Boxer will not be ignored and will go to great lengths to draw attention to itself, good or even bad. Jumping on people is a common complaint, so positive reinforcement training is a must. They are affable, lovable, clown-like, yet dedicated dogs who adore their owner(s).