Leech
Leech is anelid animal that includes the subclass Hirudinea. There are various types of freshwater leeches, seawater and land. Like the Oligochaeta, leeches show clitele members. Leeches are hermaphrodite animals such as worms. Some types of leeches have been used in medical sucking blood for thousands of years, but most leeches do not suck up blood. The blood-sucking lean is attached to the home until it is full, after which it drops to digest food. Leech body consists of 34 segments. The anterior suckers are formed in six segments of their body, which are used for housekeeping, while removing anesthetic fluid so that the housemates do not feel leech. Leech releases mucus mixes and fixtures of concentric muscles in these six segments to keep clutter and secretion of blood clot enzyme in the host blood system.