Why Did These Ancient Gophers Have Horns?
8:17
How the Walrus Got Its Tusks
10:11
How South America Made the Marsupials
8:10
When Dinosaur Look-Alikes Ruled the Earth
10:24
When Giant Hypercarnivores Prowled Africa
9:56
Why did Birds Lose their Teeth?
8:40
The Bear-Sized Beaver That Couldn’t Build A Dam
10:28
How Blood Evolved (Many Times)
9:54