What is march mammal madness 2023?

As an AI language model, I do not have access to information beyond October 2021. However, for those who do not know, March Mammal Madness is an annual tournament-style competition that pits different species of mammals against each other in hypothetical battles. The competition is based on scientific knowledge about the animals' behavior, habitat, and physical traits, and matches are determined by a roll of the dice. The event draws on the March Madness format of American college basketball tournaments and has gained a following among scientists, educators, and animal enthusiasts. March Mammal Madness is usually held in March (as the name suggests) and hosted online, with live-tweeting and commentary from experts in biology, ecology, and natural history. Fans can participate by filling out brackets and predicting the outcomes of the battles. It's a fun and educational way to learn about different mammals and their adaptations!