a type of segmented worm with a flat body and suckers at both ends; found in freshwater environments, they are known for sucking blood and are used in traditional medicine; also known as [[蚂蟥|螞蟥|ma3 huang2]] or [[马鳖|馬鱉|ma3 bie1]]

a type of mica mineral that expands when heated; used widely as insulation, fireproofing, and a soil amendment

a type of terrestrial leech found in forests and mountains

the naturally occurring peptide in the salivary glands of medicinal leeches

a type of land flatworm often called a hammerhead worm, mistakenly referred to as a type of earthworm in some contexts

A type of parasitic flatworm that lives in the liver of humans and animals; also called [[肝吸虫|肝吸蟲|gan1 xi1 chong2]]

a parasitic worm that lives in the lungs of humans and other animals

A type of blood-sucking leech that lives in mountains and grassy marshes; it attaches to the skin of people and animals.