Fun Facts About Reptiles (爬行动物) A snake's eyes look as if they are always open and watching. Its eyelids are transparent (透明 的), so you can't see that they're closed. If a lizard is caught by the tail, its tail will break off, but it can grow a new one. A hidden crocodile can hold its breath underwater for an hour. Fun Facts About Water Creatures A humpback whale (座头鲸)'s big tongue weighs as much as a small car. Sea horse babies live safely in their father's body until they are big enough to be on their own. A type of lungfish can live for four years without food or water if it has to. A mudskipper (弹涂鱼) is an odd fish that can jump out of the water, skip across mud, and climb a tree. A halibut (比目鱼) is a big, flat fish that has both eyes on the same side of its head. Fun Facts About Mammals A kangaroo can balance on its tail and fight or punch with all four feet. Every zebra has its own pattern of stripes. No two zebras are striped the same. A big, heavy hippo looks slow,but it can run faster than a person. A camel can close its nose to keep the desert sand from blowing in. Fun Facts About Insects A butterfly chooses its lunch with its feet. It has little sensors on its feet that can taste flavors that it likes. A cricket's ears are on its knees, not on its head. To hear better, it turns its knees toward the direction of the sound. An ant can find your picnic lunch. It has a sense of smell that's as good as a dog's.