feces ENVO ENVO:00002003 EcoLexicon:drop Feces is an excreta consisting of waste products expelled from an animal's digestive tract through the anus (or cloaca) during defecation. SPIRE:Dung SWEETRealm:Drop This is distinct from classes such as http://purl.obolibrary.org/obo/UBERON_0001988 in that it refers to the environmental material composed primarily of feces rather than 'just' feces. Wikipedia:Feces droppings dung faeces frass pellet excreta