Up Next
Back to Show
Eons
How Animals Got Butts
Season 7
Episode 9
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.
Support Provided By
10:27
Understanding the Isthmus of Panama.
9:35
Tiny mammals and a group of lizard-like reptiles shared a trait that helped them survive extinction.
10:43
Where the space rock came from 66 million years ago that crashed and killed the dinosaurs.
8:19
Fish evolved terrestrial traits to...stay fish?
12:07
We're the only ones with chins, and we don't know why.
12:40
Why did sharks get so incredibly diverse and odd during the Golden Age?
12:12
What was Charles Darwin really obsessed with?
12:29
Did you know ocean basins are reincarnated?
8:36
How did such a large predator survive?
9:41
How did a relative of the red panda end up in North America?
8:10
How did the competition of spiders vs insects drive them both into the air?
12:38
Why plate tectonics don't make sense.