After going out for a dog walk, a woman realised that a photo she had taken on the outing made quite an entertaining brainteaser.
The picture features a pug dog, enjoying some time out in a park.
However the little pooch is pretty hard to spot in the image, so she decided to share it and see if others could find the animal.
The picture was originally posted on Instagram by the account PugPudi back in 2015, but has been recirculated online this week, going viral on Facebook and Twitter.
The photo was shared as a bit of fun with the instruction to "spot the pug".
Hundreds have liked the photo, but some are still struggling to locate the pug for themselves.
One person said: "That's funny. Hidden in plain sight."
Another commented they thought it was "amazing".
Someone else wrote: "I am going to cry. I will find him, I will."
"That's good," added a fourth.
For those who still haven't been able to spot the pup, we suggest taking a closer look at the arm of the bench.
The little dog's happy face can be seen through the hole.
