March 27, 2007—Tearing through laundry, messing up the bathroom—river otters aren't all that different from human toddlers, as one Missouri biologist and his wife learned when they raised orphaned pups.

Watch as Glenn and Jeannie Chambers endure "otter chaos" to teach Paddles and Babyface how to swim, to eat fish Popsicles, and generally to be themselves—all leading up to an emotional farewell.