Season 4

Dr. Oakley chases sheep, protects an ailing musk ox, and teams up with a superhero pig. She then reunites with Patches, a dog with a puzzling paw problem.

Dr. Oakley performs physical examinations on two black bears during a risky relocation, and a grey wolf goes under the knife for a complicated procedure.

Dr. Oakley examines two feisty wood bison before they are released into the wild, then travels by helicopter to a glacier to check on sled dogs.

Dr. Oakley takes to the skies to chase some of the Yukon's toughest wild horses, and a kitten's unexpected pregnancy scare could force a tough medical decision.

Dr. Oakley travels to Prince Edward Island to tackle a bison inbreeding problem, and then helps a horse with a fractured hoof.

Dr. Oakley goes to a remote island for a calf castration, but the routine surgery quickly turns dangerous.

Dr. Oakley risks her life to save a brown bear from drowning and a 600-pound boar needs help parting with his oversized family jewels.

Dr. Oakley travels to a bear sanctuary where she ends up in the middle of a brother bear brawl. Meanwhile, a horse named Fancy is having trouble with her gait.