Introduction: Elephant talk: Scientists discovered how to listen in -- Do dogs see in color? To find out, scientists taught them a game -- How dogs came from wolves: People bred tame animals from wild ones -- Long-distance whale: It?s the very same whale. You can tell by its tail -- How birds hatch their eggs: It?s not easy -- Why the puffins came back to egg rock: After a hundred-year absence, they?re back! -- Tracking the wandering Albatross: Bird spends most of its life on the wing -- Living on the edge of danger: Ant loves heat -- Seal is a sneaky swimmer: Scientist caught it saving energy -- Cool story about an Antarctic fish: Why doesn?t it freeze? -- Warm-blooded fish? Some fish can keep parts of their bodies warm -- High-tech fish: They have their own electric fields.