Feces
Appearance
Feces (also spelt faeces) is the waste from the digestive tract expelled from the anus of animals. It consists of undigested food residues, digestive secretions, and bacteria. The reddish-brown color of feces is derived from stercobilin, created by bacterial action on bilirubin and subsequent oxidation.
Scatology is the study of feces.
Scatophilia is a sexual attraction to feces.
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