Watch: Rats Can Easily Get Into Your Toilet, And It’s Your Worst Nightmare

FILE - In this Jan. 27, 2015, file photo, a rat crosses a Times Square subway platform in New York. It’s a problem practically as old as New York itself, how to handle the untold legions of rodents residing in the city. Last year, the city received more rat-sighting calls than ever before, and officials, led by a city rat scientist, are trying new and innovative ways to control the population, with mixed results. AP Photo/Richard Drew, File

Disgusting as they may be, rats are quite determined. They’re so determined that they can easily swim up into your toilet bowl from the sewer system, as this video from National Geographic shows.

The aforementioned video from National Geographic reveals how quickly a rat can get through a plumbing system. The video shows that rats have a great deal of endurance and flexibility to get where they need to go.