At first glance, this photograph appears to show only snow and trees.
But almost hidden from view is a dog so well disguised that puzzlers struggle to identify it.
The snowy snap was shared on Reddit with the caption “find the pupper”.
However, brain teaser fans were perplexed and failed to spot the pooch.
“Bro where?” one user asked.
“Yep, he’s got a good hiding spot lol,” said another.
The perplexing photograph depicts an apparently simple scene, but the dog is hiding in plain sight.
You may have the eyes of a hawk if you can spot the canine within five seconds.
Those who are having difficulty should look towards the centre of the snap, where the snow and trees meet.
The solution is at the bottom of the page.
Meanwhile, puzzlers have been challenged to locate the tiny finch among the stones.
Yolanda Bogert, 42, posted a photo of George the finch on social media, which confused hundreds of users due to his location.
This brainteaser challenges you to find a mistake in the image for more mind-bending puzzles.
Another challenge: in five seconds, find the rogue word hidden in this optical illusion.
Can you find the correct spelling of the word in this optical illusion?
And can you spot the snow leopard hiding in plain sight in this photo?