Hedgehogs are more weirdly scatological and cannibalistic than the Sonic the Hedgehog series has led us to believe, as clearly and cartoonishly illustrated by the latest episode of Scientifically Accurate from Fox's Animation Domination High-Def.
In the incredibly catchy yet informative video, we learn about the least appealing traits of actual hedgehogs, which include creating a poopy froth and then rubbing that mixture on themselves to the bewilderment of science. The Scientifically Accurate Sonic video touches on the real-world relationship between hedgehogs, foxes and echidnas — and which of Sonic the Hedgehog's friends has the most unique penis.
In light of the feces eating, hedgehog-on-hedgehog violence and cartoon genitalia under discussion in the above video, let's call this one NSFW.