“Though they have inherited some aversion to staring too long at eyes, dogs seem to be predisposed to inspect our faces for information, for reassurance, for guidance.” They are staring, soulfully, into our umwelts. It seems only right that we try a little harder to reciprocate, and Horowitz’s book is a good step in that direction. But she can be a bit coy and overly stylish in her attempt not to sound too scientific, and to the particular choir to which she is preaching, much of her material will be familiar.

In that same vein, the tone of the book is sometimes baffling — an almost polemical insistence on the value of dogs, as if they’d long been neglected by world opinion. But then Horowitz will drop in some lovely observation, some unlikely study, some odd detail that causes one’s dog-loving heart to flutter with astonishment and gratitude.