Ahead of Sierra's departure for vet school, the team treats an emu, a dog with a bulging eye, and a reindeer with a cracked antler.

Dr. Oakley treats a pair of debilitated chickens and a Highland cow who loves to give hugs. A reindeer farm hopes to turn their luck around.

Dr. Oakley transports baby bison to their new home and treats a pair of therapy reindeer that help a veteran with PTSD.

Dr. Oakley treats a baby elk with a limp, performs a dental on a musk ox and gives a roadside pedicure to a pig.

Dr. Oakley vaccinates a jet-setting chihuahua, tries to outsmart a shifty coyote, and meets a cow with an unusual growth.

Dr. Oakley treats a cherished breeding bull, a cat with a worrying lump, and a musk ox struggling to walk on his front hooves.

Dr. Oakley treats an emaciated chicken and a dog with a lacerated paw. To help a mini horse, the team needs to get past his protective donkey pal.

Dr. Oakley lassos a calf at an old school cattle roundup. Later, she shears an overgrown sheep and treats a dog that was kicked by a horse.

The team travels to remote islands where they face an explosive feral cat population, neglected dogs, and a pair of mischievous goats.

Dr. Oakley treats an elk with hair loss and a tiny owl with a detached retina. One of the team's favorite patients returns with a shocking wound.

Dr. Oakley treats a dog with a mysterious nosebleed and an aging bald eagle. At the Kodiak Rodeo, she competes in a ribbon pulling contest.

In Costa Rica, Dr. Oakley treats jaguars, tackles an abscess on a tropical weasel, and determines if a rescued sloth can be released into the wild.

The Oakleys treat an electrocuted sloth, track the elusive tapir, and release rescued animals back into the wild.

Dr. Oakley herds a group of unruly reindeer and treats a breeding mini ram with a limp. Back in Haines, the team treats a dog with a mass and a supersized cat with painfully matted fur.