I’m not sure if the humans in the house enjoy this more, or if the dog does. But this can keep all parties involved busy for quite awhile. Dublin waits behind the sliding door while Shane takes his tennis ball and rubs the scent of it onto the floor. Dublin then bursts out of the door and tracks his ball! (After he finds it, he has to sniff around for anywhere that has the scent in the air…smelling all that tennis ball goodness.)