Gergely Dudás has mastered the art of the hidden image puzzle. The Hungarian artist, who goes by the name Dudolf on the web, is famous for his Where's Waldo?-style brainteasers that embed camouflaged objects into playful illustrations.
The picture below shows dozens of brown squirrels crowded into a tight frame. If you study the image closely enough, you’ll notice that one of the squirrels is actually a mouse. Like all of the hidden images in Dudolf’s puzzles, the mouse is designed to blend in with its surroundings, making it almost impossible to spot at first glance.
If you’ve been staring at the image for a minute or two with no luck, here’s a tip: Check the ears to find the animal that doesn’t belong. And if that clue doesn't prove helpful, check this webpage or keep reading to find the answer at the bottom of this page.
This story originally ran in 2019; it has been updated for 2022.