'animal-based' originates from the combination of 'animal' and 'based,' where 'animal' refers to living organisms that feed on organic matter, and 'based' indicates the foundation or source.

'animal' comes from the Latin word 'animalis,' meaning 'having breath,' and 'based' is derived from the Old French 'bastir,' meaning 'to build.'

Initially, 'animal-based' simply referred to anything derived from animals, and this meaning has remained consistent.