Labrador Jasper is brought into the hospital by his owners after struggling to breathe when out for a walk. His tongue is swollen, and it's blocking his airway, so he is prioritised for immediate treatment. Bobby the spaniel has arrived with his owner to have tests to find out why he's suffering from ongoing symptoms, such as sneezing and shaking his head. They hope it's not cancer. Meanwhile, Skye the Bernese mountain dog is treated by orthopaedic surgeon Magic for joint problems, which can be common in large breeds.