START the countdown and see if your eyes are up to par with this perception test.

TikTok users are losing their minds over this optical illusion.

This 12-second clip shows a whimsical woodland landscape of grasslands and trees before zooming into the spot where the deer is hiding.

As the camera pans toward the deer’s hideaway, your eye is guided to a spot covered by overhanging branches.

If you blink, you just might miss the elusive creature hidden among the shrubbery, relaxing in the shade.

Still perplexed? Here’s the answer key.

Another illusion is stumping netizens, as readers try to spot the matching snowflakes in this mind-boggling illusion.

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Online entertainment website Betway designed this brainteaser to get everyone in the Christmas spirit.

Puzzlers are watching the sky, hoping for snow to fall for a traditional white Christmas.

Knowing where to start looking can be hard as each snowflake falls down the screen.

You might have 20/20 vision If you can spot two identical snowflakes in less than 30 seconds.

Want a challenge? Set a timer to put your observation skills to the test.

Here’s a hint: the matching snowflakes aren’t on the same row.

Whether you found it in a second or needed to read the answer, everyone can benefit from exercising their brain with a few more illusions and puzzles.