When Vinnie, a crazy-happy dog, gets lost while visiting a nature preserve with his family, he finds comfort in the company of Bogart, a big, lazy rhinoceros. Vinnie loves his new friend, but Bogart would rather just take a nap. A friendship soon blossoms-even if Vinnie's definition of "friendship" is very different from Bogart's-and when word of their unique situation spreads, Bogart and Vinnie are a worldwide sensation! But as soon as their fifteen seconds of fame ends, what's left is a bond even Bogart can't ignore.