An organism 'X has three pairs of legs. Which organism is 'X'?
Cockroach
A cockroach can walk, climb and can also fly in the air. The muscles in the breast region of the cockroach move the legs for walking while another set of breast muscles move the wings during flying. It has three pairs of legs, whereas a bat has 2 pairs of legs. Snails do not have legs, but instead have one very large and very flat foot. Snails secrete a layer of mucus that they use to help them glide about. A catfish has fins to move and a dog has two pairs of legs to move.