Instructions
Walk your dog to earn between 75 and 200 trainer points. The points generated are essentially random but can be higher if the walk goes more smoothly.
Win a contest. This is a longer process than most ways to obtain trainer points, but if you do everything right -- such as grooming and walking -- you will earn 100 points.
Brush your dog, and play with it. You will earn one to three points every minute for brushing, and one to three points every five minutes for playing. Brushing your dog while watching television or some other activity will net you points while multitasking.