The illusion which showcases one of Arizona's most common hot weather surviving plant species was created by Central Tucson Companies ().
The real estate company describes itself as one-stop shopping for everything home rentals, parking, and financial services-related in Tucson.
They explained how a cat was watching deep within the cacti.
Those willing to take on the challenge scrambled to find the kitty while the clock was ticking.
Only 15 seconds to go if you wanted to see how strong your sight was.
The animal was hiding somewhere amongst the plants featuring bursts of yellow and purple.
At first glance, it seemed that there were no living creatures amongst the desert cacti
Making it harder was the fact that the green and brown colors helped to camouflage the scene.
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If your eyes darted to the upper right-hand side of the illusion, you might have spotted the orange head of the animal that seamlessly blended into its surroundings.
If you were a successful cat hunter then you have 20/20 vision.
Some followers who tried to find the hard-to-spot animal expressed the difficulty they faced.
"This one was hard!" said one brainteaser participant who gave it a try.
Another follower who took up the challenge found success: "Got 'em."
There was still a perk even if you didn't find the animal in the high-level brainteaser - no pricking from the cactus' needles.