Butterflies are one of the most beautiful of all insects. Most butterflies fly during the day. Most butterflies have knobs at the end of their antennae. Most butterflies have slender, hairless bodies. Most butterflies rest their wings held upright over their bodies. A butterfly begins its life as a tiny egg, which hatches into a caterpillar. The caterpillar spends most of their time eating and growing. But their skin does not grow, and so the caterpillar sheds it and grows a larger one. This process is repeated several times.Butterflies that live in warm places live longer.