Bindi swims alongside whale sharks, assisting with research efforts on the world's largest and least understood fish. Robert works to save an echidna that's tightly trapped under a fridge. Terri joins a closeup exam on a grizzly.

Robert feeds 44 hungry alligators, all at the same time. Terri helps examine Kaitlyn the tiger and makes a thrilling discovery, while Bindi follows the heartbreaking story of her old friend, Zambezi the zebra.