Veterinarian Dr. Shawn Messonnier wrote The Natural Health Bible for Dogs and Cats, The Natural Vet’s Guide to Preventing and Treating Cancer in Dogs, and 8 Weeks to a Healthy Dog. He’s the pet care expert for Martha Stewart Living’s “Dr. Shawn – The Natural Vet” on Sirius Satellite Radio, and creator of Dr. Shawn’s Pet Organics. His practice, Paws & Claws Animal Hospital (petcarenaturally.com), is in Plano, Texas.