many times i would watch the game of chase in my back yard by the dogs and squirrels..the squirrels would come down from the tree and taunt the dogs. when the dogs pursue they go back up and the tree, just enough to be out of reach and then start taunting the dogs again..my irish setter/beagle mix stays at the bottom of thetree for a long time looking up and i know he is thinking.."go ahead and come back down and see if i dont have something for ya"..now the robins r in the act now..guess u can say my dogs dont get bored..wink..yall comeon back now yahear!