Two fractious felines make life miserable for the vet team when they try to clean tartar from the cats' teeth. A Schnauzer heads into surgery with a fist-sized tumor in his lungs. A rabbit is suffering from sneezing fits and her owner worries she has a serious respiratory illness. Rusty, part of a team of show mules, has a strange growth on his ear that could at least, threaten his career and at worst, threaten his life.