How Animals Got Butts

Join hosts Kallie Moore, Michelle Barboza-Ramirez, Gabriel Santos, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age.

Season 7 Episode 9 | 12m 10s | CC

While the evolution of the butthole was a major breakthrough in animal development, its story might actually end with redefining what it means to have a butthole at all.

Eons