I have a 2 1/2 year old Chinese crested powder puff. She is a rescue dog an we are her third owners. She joined us at 10 mos. of age. She stands about 13 to the shoulder and weighs 19.5 lbs. She is very active, we walk 2 1/2 to 3 miles daily and 5 times a week she goes on a 2 mile jog with me. She is very broad chested but does not have much body fat. She is a very solid dog. My concern is am I exercising her too much and should her weight be a concern. She appears healthy and happy in all respects.