Our intrepid guides are determined to get to the bottom of a baffling biological question: why do we poop? From fertilizer to prehistoric clues, we can actually learn a lot from “number two”.
Paula discovers “poo” can actually tell us a lot about an animal.
Some animals just need to “go” when nature calls, but most house pets can be trained.
These little guys can turn "number two" into plant fertilizer.
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