Book excerpt: For 26 years, Dr. David Perrin served as a country veterinarian in the rural (but never quiet) Creston valley of southern British Columbia. Don't Turn Your Back in the Barn is his engaging and entertaining firsthand account of his rookie year on the job in the early 1970s. Reminiscent of the beloved books of British veterinarian and writer James Herriot, Perrin's book is by turns heartbreaking and hysterical. In 22 stories, he relays his encounters with an eclectic group of two-legged clients and a roster of four-legged patients that range in size from a newborn kitten to a 1,500-pound pregnant heifer. Perrin's honest account of veterinary life includes his mistakes, successes, and frequent searches for answers to problems that most of us will thankfully never have to consider (for example, how does one discourage the advances of an amorous billy goat'). Passion, pathos, adventure, humor-Don't Turn Your Back in the Barn has it all.