DESC: There are many animals in the world who depend on their senses in different ways than we do, and many animals who have different senses all together! Dogs have some of the most specially developed noses of all mammals, and can use them to smell things that are underground, far away, or that just smell like home. Some animals can see in the dark. Chris and Martin take a trip in a hot air balloon to get the perspective of a hawk, with its wide range of vision.