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SciShow
7 Animals with Super Weird (and Sometimes Horrifying) Teeth
Humans don't have interconnected teeth for slicing, or a secondary set of jaws to clamp down on prey already in our mouths, however, the rest of our animal kingdom is full of strange and awesome adaptations. Hosted by: Olivia Gordon...
PBS
The Great Snake Debate
Snakes are just lizards without legs, right? Scholars study the sensational evolutionary history of the snake with a video from a well-written biology playlist. Topics include snake fossils, theories on snake evolution, and...