3 Facts about Dogs in Celebration of Dads Best Friend ​​1. Dogs have terrible short-term memories Dogs have the "gift" of poor memory. Tease them, annoy them. You get to have your fun then within a couple of minutes your pooch will forget all about it and treat you like their bestie within a minute or two! Dogs do not hold grudges!. 2. Dogs have great long-term memories While your dog will forget that you hid the ball, after making them crazy, they wont forget the connection