Animals

Do Pets Have Nightmares?
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Anecdotally, yes. But what does science say?
Homo Erectus, Come on Down!
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Once early man came down from the trees and slept on the ground, they learned how to dream. And everything changed.
How Do Sharks Sleep? Do They Dream?
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Inside the mystery of sharks and how just exactly they get to sleep -- if at all.
English Bulldogs and Apnea: What Animals Have Taught Us About Sleep
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Can studying mice, fish, cats, dogs and even fruit flies yield insights into the human condition, and our need for sleep?