Both pass gas shamelessly. Neither of them notices when you get your hair cut. Both are suspicious of the postman. Neither knows how to talk on the telephone. Neither understands what you see in cats.
Dogs are very direct about wanting to go out.
Dogs don't feel threatened by your intelligence. You can train a dog. Dogs are easy to buy for. You are never suspicious of your dog's dreams. The worst social disease you can get from dogs is fleas.