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Crash Course Zoology
Brainy & Brainless Animals
Season 1
Episode 5
We're going to take a closer look at brains, how animals use them, and how some animals have even evolved to lose them! It turns out a brain (and intelligence more broadly) isn't easy to define, but what we do know for sure is that brains have evolved over time in response to the challenges in an animals' environment.
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12:32
We try to answer mysteries from DNA sequences to where all the baby eels are!
12:42
We discuss how animals use senses to explore their environment and communicate.
12:39
We walk through the history of eyes, how they work, and vision's evolutionary advantage.
13:35
We explore carnivores, herbivores, and omnivores and how animals help redefine food.
11:29
We try to figure out what that “average” animal would really look like.