Common name for carnivorous or blood sucking worm that was once widely used in the medical field and is still used in some places leaches are used to relieve blood congestion in some operations Leech are found in many main waters and are found in tropical and temperate regions.

appearance

the leech is a flattened ringworm, that measures 5 mm to 46 cm in length and have a sucking disk used to cut into the flesh and suck the blood the leech appears as a black worm with an eating problem (it's fat looking)

For a laugh if you find a leech put some salt on it