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Your Inner Fish | Promotion | Episode 2: Your Inner Reptile - Preview

"Your Inner Reptile" traces our hair, skin, teeth, jaws and sense of hearing back to reptilian ancestors — from ferocious beasts that ruled the Earth to a little shrew-like animal that lived 195 million years ago.

S1 E2 | 0:00:30 | AIRED: 4/15/2014 |
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