Yes, the caterpillar does move by itself. It is able to do this thanks to its muscular and skeletal system, which allows it to contract and extend its body in order to move across surfaces. A caterpillar's locomotion is called inching or looping. This involves moving the front and rear of the body in a wave-like motion, which propels it forward. The caterpillar may also use its prolegs, which are small fleshy projections that act as feet, to help it cling to surfaces.
In order to move, the caterpillar must use a combination of muscles and its hydrostatic skeleton. Its muscles are arranged in circular and longitudinal bands, which allow it to extend and contract its body. Its hydrostatic skeleton is composed of a fluid filled cavity, which the caterpillar can use to control its body shape and movement.
Caterpillars are able to move in a variety of directions, including forward, backward, and sideways. They can also climb up and down surfaces, and even swim, if necessary. This ability to move freely helps them to find food, avoid predators, and even search for a suitable place to pupate.
In summary, the answer to the question is yes, the caterpillar is able to move by itself thanks to its muscular and skeletal system. Its locomotion is called inching or looping, and it is able to move in a variety of directions. This helps the caterpillar to find food, avoid predators, and even search for a suitable place to pupate.