Beetles make up the largest group of insects on Earth. Why do so few of them have massive pincers?

Watch "Extreme Animal Weapons" on PBS at: http://www.pbs.org/wgbh/nova/nature/extreme-animal-weapons.html

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PRODUCTION CREDITS

Digital Producer: Arlo Perez

Editorial Review: Julia Cort, Ari Daniel

© WGBH Educational Foundation 2018

MEDIA CREDITS

Music: APM