BYU's Cosmo the Cougar is the coolest mascot ever. As Cosmo celebrates his 70th birthday, see some of his most outrageous stunts.

Learn more about Cosmo in Y Magazine: https://magazine.byu.edu/article/hist...

Special thanks to ‪@CosmoCougar‬ and ‪@BYUCougars‬
Edited by Matt Mitchell and Adam Sanders (BYU Video)
Thumbnail by Jaren Wilkey (BYU Photo)