Dogs do not have trouble expressing their feelings in public. Dogs miss you when you are gone. Dogs feel guilty when they do something wrong. Dogs don't brag about past relationships. Dogs don't critize your friends.
Dogs admit when they are jealous.
Dogs are content just being with you, no matter how gushy the movie you are watching is. Dogs don't feel threatened by female intelligence. You can train a dog not to make a mess in the house. You don't have to worry about who your dog is dreaming about. Good looking dogs don't know they are good looking.