With college basketball fans gearing up for March Madness, a different type of tournament has already begun. 

Mammal March Madness is a “survival of the fittest” type concept where scientists pit mammal against mammal to determine which one will be the champion of them all. 

The first round of this annual tournament has already taken place and Dr. Chris Anderson, a Dominican University biology professor, leads us through which mammals have the stuff to reign supreme.