Scientifically, we might know a lot more about rats than we do about dogs. There are some experimental labs that have dogs as subjects, but lab rats get a lot of scientific attention. Dogs get a lot of domestic attention, but scientific study of dogs, and the ways they get along with humans and with other dogs, has not been a high concern. That may be because we think we know dogs; they are frank and open, and we live closely with them. Alexandra Horowitz thinks we don't know enough, and some of what we know is wrong, and she is out to change our perception of dogs and to do it scientifically. She has to work at making herself a detached observer; she might be a psychologist who has studied cognition in humans, dogs, bonobos, and rhinoceroses, but among the first sentences of her book _Inside of a Dog: What Dogs See, Smell, and Know_ (Scribner) is, "I am a dog person." Is she ever. She didn't deliberately make Pumpernickel, her mixed breed live-in friend (she is an advocate for adopting mutts), a subject of scientific study, but Pump was her entrance, for instance, to the dog park where she could film the interactions of other dogs for acute detailed study later. She gives loving anecdotes of the late Pump in every chapter to illustrate her more objective findings, nicely showing how her scientific examination of dogs paid off in her understanding of her own dog. There are people who worry that scientific examination of any phenomenon takes away the mystery and specialness of the phenomenon, and among the fine lessons in this amusing and enlightening book is that this is far from true.
Dogs do not sense the world we do. To take one of Horowitz's examples, a rose for humans is a thing of visual and olfactory beauty, and also has connotations of a love gift. Dogs are having none of this. It is just another plant among all the plants that surround it; it does not look attractive, and unless some dog has urinated on it recently, it does not smell attractive. Otherwise, the rose doesn't exist. The dog's world is one largely of smells. Everyone knows that dogs are better at detecting odors than we are. It isn't just that they can smell more scents, at thinner concentrations, than we; it's that they gaze at the world by sniffing, and it presents a very different world from ours. Smell, for dogs, has plenty of meanings, but one of them is time. A strong spell is new, a fading one is old. Not only that, but the future may be borne on a breeze if the dog is walking upwind. In scents, the dog doesn't just experience the current scene in an olfactory way, "...but also a snatch of the just-happened and the up-ahead. The present has a shadow of the past and a ring of the future about it." Dogs are evolutionarily descended from wolves, and sometimes dog owners are advised to treat their dogs as lower-caste members of a pack. Horowitz prescribes caution in such interpretations. Dogs are not wolves and have cast away many wolf traits during their evolution. A person (non-wolf) attempting to subdue a dog (non-wolf) in wolf fashion is missing what is special about the human-dog bond. Dogs, for instance, like eye contact; wolves avoid it. There are many experiments described here (some of which Horowitz has herself been in charge of), and one of them involves "gaze following". Dogs can look at our eyes, and can tell where we are looking, so they look over that way, too. The sections of the book that are the most fun are the ones on play. Dogs play more than wolves do, and unlike most animals, they play as adults. It is a bit of a mystery; it isn't essential for dogs to play to get their needed social skills, and it does cost energy and the risk of injury. Horowitz describes the play cues dogs give that can only be seen by humans using very slow video replays, but which keep the play non-aggressive for the participating dogs. Dogs are good at following these rules; a strapping wolfhound and a tiny Chihuahua can negotiate a play session efficiently, with the former handicapping itself to enjoy the mock aggressiveness of the latter.
Horowitz has provided a useful service in her brightly-written summary of experiments and current theories on the minds of dogs. I have an idea that people keep dogs around not just because of their goofy affection for us, or because they are so entertaining, but simply because they are interesting. It is fun to see how a creature who has evolved an intelligence different from our own gets along in the world. Horowitz's book helps explain that interest, and heighten it.
