The Harrison’s had a mixed breed Collie named Dash. The dog belonged to the President’s wife, Caroline Harrison. He was probably their favorite dog, because unlike their other dogs, Dash had a private doghouse next to the White House. The President thought people would think less of him if they saw him show affection for his dog, so he rarely played with his pets. The President had another dog named Jack, but there isn’t much info about this dog. What was known is that he didn’t have a kennel next to the White House like Dash.