Make no bones about it, this is the section to learn what's going on inside your cat or dog. If you've ever wondered just what makes your dog or cat tick, we have the answers. Compiled by Veterinarians and animal specialists, this is a guide to the internal working of dogs and cats. Presented for the layman, this is a journey through the skeletal system, cardiovascular system, respiratory system, digestive system, senses and much, much more.