I have eight years of caring for my own dogs, and they ran the gamut from Chihuahuas to Rottweilers, as well as raising a litter of Italian Greyhounds! I understand the needs of puppies, as well as of senior dogs, and can keep up with even the fastest dogs. I have also cared for friends and neighbor's dogs when the neighbors went on vacation, including feedings twice a day for one hearty eater (as his parent requested, I promise)!