Dr. K's clinic fills up with mysterious cases, including a one-year-old sugar glider who is lethargic and isn't eating, a gassy rabbit who worries Dr. K, and a baby macaw who suffers fainting spells. A sassy prairie dog has a toothache and Dr. K finds that she has food and blood stuck in her teeth. If she doesn't address this quickly, Sassy could have a serious problem.