(L-R) Dustin Poirier punches Conor McGregor of Ireland in a lightweight fight during the UFC 257 event inside Etihad Arena on UFC Fight Island on January 23, 2021 in Abu Dhabi, United Arab Emirates. (Photo by Jeff Bottari/Zuffa LLC)

YouTube personality Jake Paul (L) fights former UFC welterweight champion Tyron Woodley at the Amalie Arena in Tampa, Florida, on December 18, 2021. (Photo by Kim Klement/USA TODAY Sports)

UFC women's bantamweight champion Holly Holm and Miesha Tate face off during the UFC 196 weigh ins at the MGM Grand Garden Arena in Las Vegas on Friday, March 4, 2016. (Photo by L.E. Baskow/Las Vegas Sun via AP Photo)

(L-R) Alex Pereira of Brazil punches Israel Adesanya of Nigeria in the UFC middleweight championship bout during the UFC 281 event at Madison Square Garden on November 12, 2022 in New York City. (Photo by Jeff Bottari/Zuffa LLC)

Alexa Grasso, left, is hit by Valentina Shevchenko during a UFC 285 mixed martial arts flyweight title bout Saturday, March 4, 2023, in Las Vegas. (Photo by David Becker/AP Photo)

Geese fight during the annual Geese Fight Day in the northern Serbian village of Mokrin, some 160km (100 miles) from Belgrade February 22, 2015. Every year in the last week of February, goose fights are held in the northern Serbian village of Mokrin. Left alone, male geese, or ganders, are unlikely to fight each other, hence why females are brought along for whose affections the ganders then fight until one or the other gives up. (Photo by Marko Djurica/Reuters)

Two stags fight in a wildlife park in Aurach near Kitzbuehel, in the Austrian province of Tyrol. (Photo by Kerstin Joensson/Associated Press)