Okay, so rats are clearly intent on taking over the world.

Whether they're determined to haul their pizza down a set of stairs or fight to the death with another rat for a slice, these rodents mean business. Especially in New York City.

The latest example? This video from Brooklyn, in which a rat and a pigeon engage in a serious tussle. It's like the animal kingdom version of UFC.

This clip is actually from 2014, but has only now started trending, maybe, in part, due to all the pizza rat videos that have recently been popping up.

You've probably heard New York is a tough town, but who knew that extended to the rats that are willing to get into it with other animals for control of the streets?