In this Friday, Feb. 1, 2013 photo, Lilly, a 14 year-old Pug dog plays with a "Kong" dog toy in her home in Silver Springs, Md. Many trainers say that feeding dogs with food-dispensing balls, puzzles and other toys is a great way to keep them active and well-behaved. (AP Photo/Pablo Martinez Monsivais)

Associated Press
In this Friday, Feb. 1, 2013 photo, Lilly, a 14 year-old Pug dog plays with a "Kong" dog toy in her home in Silver Springs, Md. Many trainers say that feeding dogs with food-dispensing balls, puzzles and other toys is a great way to keep them active and well-behaved. (AP Photo/Pablo Martinez Monsivais)
In this Friday, Feb. 1, 2013 photo, Lilly, a 14 year-old Pug dog plays with a "Kong" dog toy in her home in Silver Springs, Md. Many trainers say that feeding dogs with food-dispensing balls, puzzles and other toys is a great way to keep them active and well-behaved. (AP Photo/Pablo Martinez Monsivais)
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