The new March Mammal Madness Busted Bracketeers pool is an abbreviated version of the March Mammal Madness pool. It works just like the March Mammal Madness pool except it begins with the Sweet Sixteen. If your initial MMM bracket picks didn’t quite pan out, this pool allows you to start anew, picking a new champion and following the action through to the end.

This is a free bracket pick'em pool based on the March Mammal Madness Tournament. Instead of a pool for sporting events, this pool was based on mammal vs mammal combats. It has since grown to include any species vs any species, not just mammals. Pick who will win each battle.

March Mammal Madness is a simulated tournament where a team of scientists research the combatants and their habitats to determine the winners. Find out everything about the 2025 MMM tournament at the official March Mammal Madness website!

Unlike our other pools, there are no changeable league options. Players pick the whole bracket before the first battle starts. The scoring is the same for all players and is exactly the same as the official March Mammal Madness Tournament rules.

Starting in 2026, the March Mammal Madness Pools are exclusively available on poolsmmm.org. poolsmmm.org has all the same great features as poolsbyround.