Human butts are divided into two cheeks that come in all shapes and sizes. Plus, they help us stand upright and move around! But what about dogs and cats? Why don’t they have butt cheeks like ours? We asked dog researcher Alexandra Horowitzto help us find the answer.
Got a question you’ve been sitting on? Send it to us at BrainsOn.org/contact, and we’ll help you crack it open!

We’re back! Brains On Universe has a new headquarters
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A big update about Moment of Um and the Brains On Universe
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How do braces work?
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