We've been tested recently by a puzzle that reveals how perceptive we are and it looks like the trend in brainteasers testing our powers of observation isn't dwindling.
From hunting for Easter eggs hidden among bunnies to spotting the cat concealed in a group of wide-eyed owls, these puzzles' popularity continues to grow.
The latest test challenges eagle-eyed viewers to find "Pete the Panda" among a group of tightly packed animals including pugs, cats and owls.
• Scroll down to find Pete
Pete is a fictional character sold as a cake at British supermarket chain Asda.