A big brain might seem like a good thing, but they can actually be a liability.

Why Are Mountain Beavers’ Brains Smaller Than Their Ancestors?

You have questions and A Moment of Science has answers. Short science videos and audio science podcasts provide the scientific story behind some of life\'s most perplexing mysteries. There\'s no need to be blinded by science. Explore it, have fun with it, but most of all learn from it. A Moment of Science is a production of WFIU Public Media from Indiana University in Bloomington, Indiana.

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Why Are Mountain Beavers’ Brains Smaller Than Their Ancestors?

Why Are Mountain Beavers’ Brains Smaller Than Their Ancestors?