Primates, Reptiles, Amphibians, And Fish All Yawn. Are There Any Animals That Don't?Chances are you’ve yawned today, and if you haven’t, I expect you’re about to. It’s a daily practice for we weary humans, but yawning isn’t unique to our species. Far from it. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.Yawning is seen in a diverse...
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