The Viral 'Chicago Rat Hole' Wasn't Actually Made by a Rat, Scientists Claim

The source provides an extensive overview of the Chicago Rat Hole, an unusual imprint in a Roscoe Village sidewalk that became a global viral sensation and impromptu shrine in early 2024. This phenomenon, nicknamed "Splatatouille," attracted tourists and media attention for its perceived origin as a brown rat stuck in wet concrete decades earlier, symbolizing Chicago's reputation as the "rattiest" city. However, the text details how a 2025 scientific study, utilizing statistical analysis and museum specimen measurements, definitively concluded that the imprint was not created by a rat but rather by an Eastern gray squirrel. The episode describes the cultural fervor surrounding the hole, the meticulous scientific process that debunked the myth, and the broader implications of applying scientific rigor to viral urban oddities.