A horse scheduled to be euthanized is given a respite. An illiterate man learns to read so he can better care for his puppy. A neurologically impaired kitten might provide a key to understanding storage diseases in humans. These are some of the successes that make the practice of veterinary medicine a joy, and sometimes a heartbreak. For Kylie Wheeler, they are why she's chosen a career in veterinary medicine, and why she struggles every day of her professional life.