How many legs does a centipede have? joke

Centipede, commonly known as "hundred feet", has no one hundred legs, only twenty feet. It is a phylum of arthropods, belonging to a polypod. Centipede is one of the animals with a long history on the earth. This primitive animal appeared in nature about 400 million years ago. It is a poisonous predator, and its sense of touch and vision is very keen. Even poisonous hairy spiders can't escape its pursuit. It preys at lightning speed and tries its best to catch prey. Its chemical weapons are fangs and poisonous glands. It has two curved hollow fangs which communicate with poisonous glands. After it catches the prey, it quickly inserts the fangs into the body, injects venom, paralyzes the prey first, and then kills it. Centipede often emits a special smell to delimit its sphere of influence.