Sentence:  It cannot be denied it [the chameleon] is (if not the moſt of any) a very abſtemious <WSD>animall</WSD>, and ſuch as by reaſon of its frigidity, paucity of bloud, and latitancy in the winter (about which time the obſervations are often made) will long ſubſist without a viſible ſuſtentation. 
Meaning of the word marked with <WSD> tags:  In (scientific) usage, a multicellular organism that is usually (mobile), whose (cell)s are not encased in a rigid cell wall (distinguishing it from (plants) and (fungi)) and which derives energy solely from the consumption of other organisms (distinguishing it from (plants)).