Back when I had dogs, dogs always have a habit of going crazy over yard sprinklers and chasing them. I no longer have dogs but the sprinkler is out in the yard going around and around and splashing water up on to the window and everytime the water splashes on the window, little Persi goes crazy trying to catch it. The sprinkler goes off automatically every morning and what is so cool about all of this besides the entertainment he provides us, is that he gets his morning exercise every day without any effort on my part!