The latest brain-teaser from Hungarian cartoonist Gergely Dudas is quite the head scratcher! Your challenge? Find the singular dog in this herd of cows.

The team from Tama partnered with the artist to create the puzzle, and they suggest finding the canine by looking at the horns of the cows.

If you still can’t find it, scroll to the next photo in the gallery above for the answer.

Do you enjoy brain teasers? They’re a great way to keep your mind healthy and active. Let us know how you employ these tactics in the comments below.