4 things to know about owning guinea pigs

Why do animals yawn? Why do cats eat grass? Why do they purr? And why on earth does my pet eat poop? Benjamin Hart, DVM, PhD, DACVB, and distinguished professor emeritus at the University of California – Davis, addressed some of the more inexplicable behaviors of companion animals in his talk at the American Veterinary Medical Association’s (AVMA) conference this year: “Why do they do that? Purring, yawning, flipping out on catnip, and eating poop.”