If you look closely, you can even see the tiny puppy's tail wagging at 100 miles an hour! Clearly, he's very proud of himself ...

Horowitz, who runs the Dog Cognition Lab at Barnard College, is the author of The Year of the Puppy: How Dogs Become Themselves Puppies aren’t born barking, just as children aren’t born chattering.

This guide explains the common causes of excessive barking, provides training strategies, offers tips on lifestyle improvements, and answers frequently asked questions. By the end, you will know how ...