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Life, Sex & Death Among the Dire Wolves

Life, Sex & Death Among the Dire Wolves

Season 1 Episode 56
9:15
When We First Walked

When We First Walked

Season 1 Episode 57
10:56
Did Raptorex Really Exist?

Did Raptorex Really Exist?

Season 1 Episode 58
12:27
Can We Get DNA From Fossils?

Can We Get DNA From Fossils?

Season 1 Episode 59
11:22
When Giant Amphibians Reigned

When Giant Amphibians Reigned

Season 1 Episode 60
9:51
Your Place in the Primate Family Tree

Your Place in the Primate Family Tree

Season 1 Episode 61
11:35
The Two People We're All Related To

The Two People We're All Related To

Season 1 Episode 62
8:44
When Rodents Rafted Across the Ocean

When Rodents Rafted Across the Ocean

Season 2 Episode 1
9:59
When Birds Stopped Flying

When Birds Stopped Flying

Season 2 Episode 2
7:14
When Camels Roamed North America

When Camels Roamed North America

Season 2 Episode 3
9:45
How Sloths Went From the Seas to the Trees

How Sloths Went From the Seas to the Trees

Season 2 Episode 4
11:45
When Sharks Swam the Great Plains

When Sharks Swam the Great Plains

Season 2 Episode 5
11:45
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Eons

The Rise and Fall of the Bone-Crushing Dogs

Season 1 Episode 55

A huge and diverse subfamily of dogs, the bone-crushers patrolled North America for more than thirty million years, before they disappeared in the not-too-distant past. So what happened to the biggest dogs that ever lived?
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