Cyclosia papilionaris consuming bird droppings<unk>  is the scientific terminology, while the term stool is also commonly used in medical contexts. Outside of scientific contexts, these terms are less common, with the most common layman's term being poo (or poop in North American English). The term shit is also in common use, although is widely considered vulgar or offensive. There are many other terms, see below. Etymology The word<unk>  is the plural of the Latin word faex meaning "dregs". In most English-language usage, there is no singular form, making the word a plurale tantum; out of various major dictionaries, only one enters variation from plural agreement. Synonyms<unk> " is used more in biology and medicine than in other fields (reflecting science's tradition of classical Latin and New Latin) *In hunting and tracking, terms such as dung, scat, spoor, and droppings normally are used to refer to non-human animal<unk>  *In husbandry and farming, manure is common. *Stool is a common term in reference to human<unk> . For example, in medicine, to diagnose the presence or absence of a medical condition, a stool sample sometimes is requested for testing purposes. *The term bowel movement(s) (with each movement a defecation event) is also common in health care. There are many synonyms in informal registers for<unk> , just like there are for urine. Many are euphemismistic, colloquial, or both; some are profane (such as shit), whereas most belong chiefly to child-directed speech (such as poo or poop) or to crude humor (such as crap, dump, load and turd.). Horse<unk> <unk>  of animals The<unk>  of animals often has special names (some of them are slang), for example: *Non-human animals *As bulk material – dung *Individually – droppings *Cattle *Bulk material – cow dung *Individual droppings – cow pats, meadow muffins, etc. *Deer (and formerly other quarry animals) – fewmets * Wild carnivores – scat *Otter – spraint *Birds (individual) – droppings (also include urine as white crystals of uric acid) *Seabirds or bats (large accumulations) – guano *Herbivorous insects, such as caterpillars and leaf beetles – frass *Earthworms, lugworms etc. – worm castings<unk>  extruded at ground surface)<unk>  when used as fertilizer (usually mixed with animal bedding and urine) – manure *Horses – horse manure, roadapple (before motor vehicles became common, horse droppings were a big part of the rubbish communities needed to clean off roads)
Feces
Human feces
Fecalith
Blood
Juice
Urine
Guts UK
Chyme