Dogs don't shop. Dogs like it when you leave lots of things on the floor. A dog's disposition stays the same all month long. Dogs never need to examine the relationship. Dog's parents never come for a visit.
Dogs love long car trips.
Dogs understand that instincts are better than asking for directions. When a dog gets old and starts to snap at you incessantly, you can shoot it. Dogs like beer. Dogs don't hate their bodies. No dog ever put on 100 pounds after reaching adulthood.