In Cold Blood
- Episode aired Oct 25, 2023
- TV-PG
- 55m
After Earth's third mass extinction, mammals' surviving ancestors ruled the super continent Pangea. But lizards soon ushered in the age of reptiles.After Earth's third mass extinction, mammals' surviving ancestors ruled the super continent Pangea. But lizards soon ushered in the age of reptiles.After Earth's third mass extinction, mammals' surviving ancestors ruled the super continent Pangea. But lizards soon ushered in the age of reptiles.