These playful creatures are teetering on the edge of extinction in many places. Find out how people can help.

"Ka-splash! "Head to the river, where a frolicsome bunch of otters plays all year round in a nonfiction story sprinkled with facts and loaded with fun. Its spring, and a litter of baby river otters emerges from a den . . . to play! Follow the otters through the seasons as they chase one another, slide down a mudbank, jump in a pile of leaves, and learn to swim. Even while catching fish for their dinner or grooming themselves in the snow, otters love...