Some photos are unintentionally funny, others have intriguing backgrounds, and of course, there are those so perfectly timed that it is hard to believe they weren't photoshopped.

We collected 40 optical illusions, most of them hilarious, but at first glance, these might even frighten you. Stop what you're doing, and enjoy these head-scratching photos.

#1 The Black Lines Are Not Camels, But Their Shadows

#2 Grinch In His Fluffy Glory

#3 Just A Lamp Reflection

#4 Dog With Bear Legs

#5 Feed The Child

#6 A Mystical Creature Or A Regular Cat, You Decide

#7 Looks Majestic, But It Is Just A Frozen Windscreen

#8 How Is This Not A Solar System?

#9 Alf, Hiding From The Paparazzi

#10 Lesson Learned

#11 A Ficus Tree Perfectly Lined Up With The Horizon

#12 That Is One Strange Looking Baby

#13 Hudini Among Cats

#14 Four Bottles, But Three Hands?

#15 This Kitty Is All About R'n'r

#16 Interstellar Is Not Just A Movie, Apparently

#17 When You Love Your Dog Too Much, So You Start Looking Like It

#18 Is This Child Possessed? No, It Is Just One Of The Best Photos Ever!

#19 This Is Supposed To Be A Dog On A Beach

#20 Never Let Go!

#21 It Still Looks Awesome

#22 Bird Cat

#23 When You Lose Your Calendar And Forget All About Arm Days In The Gym

#24 This Guy Has The Best Legs

#25 Don't Worry, It Is Just A Puddle

#26 Perspective Is Everything

#27 What Kind Of Strange Creature Is This?

#28 Nice Day For A White Wedding

#29 The Eagle Is The Pirate

#30 Is There Life On Mars?

#31 Do Not Worry, It Is Just Two People And One Mirror

#32 Floating Animal

#33 Wrong House, You Live With Humans, Not Dolls

#34 Naked Guy Or Your Eyes Playing Tricks?

#35 Old Motherboard Or Ancient Greece?

#36 Another Cat With Magical Abilities

#37 A Protest In Boston Looks Like A Bunch Of Small Bushes On The Ground

#38 Epic Ceiling Reflection

#39 Watch The Curly Guy Dive

#40 A Vampire Or A Guy With A Hoodie?