Preschool wildlife series. Andy Day looks at a selection of baby animals as they learn how to warm up and cool down. When king penguins are too cold they huddle together for warmth, and when they need to cool down they will take a mud bath. The young penguin dives face down into a muddy pool in one of its first attempts to learn this skill. The Japanese macaque uses hot springs to stay warm in the snowy winter, learning the value of these hot tubs of the animal world. Meanwhile, in the baking heat of the summer the best place for an elephant to cool down is in the water, and for young elephants this is a fun learning experience.