Dogs are more than wonderful companions. They are, to those who attentively observe, master teachers and models of how to live a richer, fuller life. Gaining a Leash on Life invites readers to obtain a new perspective following the direction of Bud, the author's scrappy 16-year-old terrier mix. For instance, Bud has a penchant for howling at 2 a.m. for no apparent reason other than that it must feel good, that it releases his spirit. In turn, the...