A caterpillar is the larval stage of a butterfly or moth. These small, often colorful creatures are known for their long, soft bodies and many legs. Caterpillars primarily eat leaves, which help them grow quickly. As they munch on plants, they store energy for their transformation into butterflies or moths. Once a caterpillar has eaten enough, it enters a stage called pupation. During this time, it forms a protective casing around itself, known as a chrysalis or pupa. Inside, the caterpillar undergoes a remarkable change, eventually emerging as a beautiful butterfly. This process is called metamorphosis, showcasing nature's incredible ability to transform.