The Chicago Rat Hole Was Not Made by a Rat

A statistical analysis revealed that a sidewalk indentation in Chicago, long believed to be made by a rat, was likely created by a squirrel, according to researchers from the University of Tennessee.

In January 2024, an indentation on a North Side Chicago sidewalk, previously attributed to a rat, was reassessed by the University of Tennessee, showing a 99% probability it was made by a squirrel.
The unusual rodent-shaped hole has become a quirky local attraction, prompting residents to share photos and theories on social media about its true origin.
Statistical methods used in the analysis highlighted the differences in size and shape between the marks made by rats and squirrels, casting doubt on the original assumption.
The investigation into the sidewalk hole reflects ongoing discussions among urban wildlife experts about the behaviors of city-dwelling animals like squirrels and rats.

Why It Matters

This analysis shifts the narrative around urban wildlife interactions in Chicago, emphasizing the need for accurate identification of animal behaviors. Residents and city planners may reconsider how they engage with wildlife in urban settings. Observations from this case may inform future studies on rodent populations and their impact on urban infrastructure.