Voir Heartland Docs, DVM, Season 5 - Episode 8

Despite a snowstorm, the Schroeders venture out to check on a horse with a severely swollen leg. Back at the clinic, the docs encounter a bunny with a safety pin through its cheek and an underweight puppy struggling to put on pounds. Later, the vets come across a cow showing signs of preterm labor, possibly caused by a transmissible infection or virus that could endanger the herd.