These guard dogs are perfect for keeping those robbers away! If you close one eye and move around them... the face appears to follow you! 👀

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Just like the Bowser Optical Illusion they're an example of a 'hollow face illusion'.

 

Print out the template below, then watch my video to see how you can make this guard dog at home.

 

Watch to the end of the video to learn more about the science behind how this works!