We all have a strong survival instinct, one that kicks in the moment that we sense danger. For some of us, our 'fight or flight' mode can be a little too sensitive to perceived threats, and we end up scaring the hell out of ourselves for no particular reason.

But hey, better safe than sorry, am I right?

This list, compiled as a part 2 to this one by Bored Panda, is a series of times when people's hearts skipped several beats because of optical illusions, coincidences or just simple misunderstandings. From ghostly apparitions that turned out to be the delivery guy, to a seemingly sawn-in-half dog, you're sure to sympathize with the people who took these terrifying pics!

Scroll down below to check them out for yourself, and let us know what you think in the comments!

#1

This Freaked Me Out. Turns Out It's A Sunset Reflection

This Freaked Me Out. Turns Out It's A Sunset Reflection

PeteLX Report

Bleh 1 month ago

Looks cool though

View More Replies...
View more comments

Optical illusions challenge our sense of reality; they make us realize that what we see is simply our brains' best interpretation of the visual cues our eyes provide. Our brains have adapted not to see what is actually there, but what we deem as useful to see.

Optical illusions occur when a visual scene unfolds that is different from what our brain has decided is the norm, and it will respond in odd and often confusing ways until finally arriving at a conclusion.

#2

Had To Look Twice

Had To Look Twice

esquonk Report

Slinkman 1 month ago

'I ain't half the dog i used to be'

View More Replies...
View more comments

According to Exploring optical illusions, there are 3 main types of optical illusion:

Literal illusions create images that are different from the objects that make them, like most of the entries on this list. For example, if 3 birds are flying, 2 above one, it can form the illusion of a smiling face.

Physiological illusions, such as afterimages following bright lights or adapting stimuli of excessively longer alternating patterns (contingent perceptual aftereffect), are presumed to be the effects on the eyes or brain of excessive stimulation of a specific type - brightness, tilt, color, movement, etc. The theory is that stimuli have individual dedicated neural paths in the early stages of visual processing, and that repetitive stimulation of only one or a few channels causes a physiological imbalance that alters perception. 

#3

Wife Left The Gloves To Dry, I Almost Had A Heart Attack

Wife Left The Gloves To Dry, I Almost Had A Heart Attack

RoninGR Report

tima 1 month ago

she didn't get over halloween yet

View More Replies...
View more comments
#4

So Last Night I Was Positive There Was A Ghost Baby In The Bed With My Son

So Last Night I Was Positive There Was A Ghost Baby In The Bed With My Son

I was so freaked out, I barely slept. I even tried creeping in there with a flashlight while my son was sleeping. Well, this morning I go to investigate a bit further. It turns out my husband just forgot to put the mattress protector on when he changed the sheets. I could kill him.

Maritza Elizabeth Report

A B C 1 month ago

In the babyphone camera, it looks as if the first baby had arms and legs, though, not just the head from the picture... That would have freaked me out, too :D

View More Replies...
View more comments
#5

Cat Gave Me A Scare This Morning. It's Paprika

Cat Gave Me A Scare This Morning. It's Paprika

bessiboom Report

tima 1 month ago

DOES paprika works same way as catnip? LOL

View More Replies...
View more comments

Cognitive illusions are assumed to arise by interaction with assumptions about the world, leading to "unconscious inferences", an idea first suggested in the 19th century by Hermann Helmholtz. Cognitive illusions are commonly divided into ambiguous illusions, distorting illusions, paradox illusions, or fiction illusions.

1. Ambiguous illusions are pictures or objects that elicit a perceptual 'switch' between the alternative interpretations. The Necker cube is a well known example; another instance is the Rubin vase.

2. Distorting illusions are characterized by distortions of size, length, or curvature. A striking example is the Café wall illusion. Another example is the famous Müller-Lyer illusion. 

3. Paradox illusions are generated by objects that are paradoxical or impossible, such as the Penrose triangle or impossible staircases seen, for example, in M. C. Escher's Ascending and Descending and Waterfall. The triangle is an illusion dependent on a cognitive misunderstanding that adjacent edges must join. 

4. Fictional illusions are defined as the perception of objects that are genuinely not there to all but a single observer, such as those induced by schizophrenia or a hallucinogen. These are more properly called hallucinations. 

#6

Whoever Did This Gave Me A Heart Attack

Whoever Did This Gave Me A Heart Attack

JamesPKP Report

Avital Pilpel 1 month ago

Whoever did this is an a-hole. A GENIUS a-hole, but still an a-hole.

View More Replies...
View more comments
#7

My Dog Is Trying To Scare The Hell Out Of Me

My Dog Is Trying To Scare The Hell Out Of Me

erethenn Report

tima 1 month ago

it fits perfectly

View more comments
#8

Housemate Was Drying His Fishing Waders. Almost Had To Add The Pants I Was Wearing To The Laundry Pile I Was Carrying After I Opened The Door

Housemate Was Drying His Fishing Waders. Almost Had To Add The Pants I Was Wearing To The Laundry Pile I Was Carrying After I Opened The Door

jabrah15 Report

Hendra Lim 1 month ago

this thing is scary af

View more comments
#9

The Snail In Our Office Fish Tank Freaked Me Out Today

The Snail In Our Office Fish Tank Freaked Me Out Today

Tyranitard Report

A B C 1 month ago

I like the pink-black-white pebbles :)

View More Replies...
View more comments
#10

Gives Me A Heart Attack Every Time, But He Loves To Sleep Like That!

Gives Me A Heart Attack Every Time, But He Loves To Sleep Like That!

morisaboo Report

A B C 1 month ago

Aww what a cutie ❤️ here's to that he has a lot of nights left to sleep like this!

View More Replies...
View more comments
#11

Scared The Hell Out Of Me When He Moved

Scared The Hell Out Of Me When He Moved

Nundee Report

Kaisu 1 month ago

He fits right in though

View More Replies...
View more comments
#12

Emergency Light In The Hallway Scared The Hell Out Of Me Earlier. Meet The New Source Of My Nightmares

Emergency Light In The Hallway Scared The Hell Out Of Me Earlier. Meet The New Source Of My Nightmares

Tezariah Report

Shawn 1 month ago

It's a haunted bride who died just before their wedding and she's waiting for you

View More Replies...
View more comments
#13

Son Woke Us Up Around 3 AM To Tell Us Some Guy Was On Our Porch With A Stick

Son Woke Us Up Around 3 AM To Tell Us Some Guy Was On Our Porch With A Stick

After almost dying of a heart attack, we realized it was the paper delivery guy. With a branch. Trying to retrieve a mis-thrown paper from our roof while looking [friggin] terrifying.

thebeesremain Report

tima 1 month ago

white outfit to look like a ghost for extra horror

View More Replies...
View more comments
#14

My Grandma Taking A Nap. Scared The Hell Out Of Me At First

My Grandma Taking A Nap. Scared The Hell Out Of Me At First

joeltrane Report

tima 1 month ago

she must be exhausted to fall asleep that way, cute grandma

View More Replies...
View more comments
#15

That Spooked The Hell Out Of Me

That Spooked The Hell Out Of Me

frex4 Report

tima 1 month ago

Hello hooman neighbor, do you have some tuna?

View More Replies...
View more comments
#16

My Aunt Got Her Dog Groomed. The Groomer Only Has Half Of His Right Arm. It Looks Like He's Elbow Deep Into The Dog, And It Freaked Me Out When I First Saw The Picture

My Aunt Got Her Dog Groomed. The Groomer Only Has Half Of His Right Arm. It Looks Like He's Elbow Deep Into The Dog, And It Freaked Me Out When I First Saw The Picture

BaByJeZuZ012 Report

A B C 1 month ago

He's trying to find braaaaaaiiiiiiiinsssss

View More Replies...
View more comments
#17

These Bacon Slices Look Like An Evil Clown...

These Bacon Slices Look Like An Evil Clown...

jtronicustard Report

Amy Pattie 1 month ago

I’m more afraid about how little meat is on that bacon

View More Replies...
View more comments
#18

My Cousin Woke Up In The Middle Of The Night, Randomly Looked At The Baby Monitor And Saw This. She Said It Scared The Hell Out Of Her

My Cousin Woke Up In The Middle Of The Night, Randomly Looked At The Baby Monitor And Saw This. She Said It Scared The Hell Out Of Her

jcmcna0733 Report

A B C 1 month ago

Question is, how long did the kid stand there and stare?

View More Replies...
View more comments
#19

I Bought My Wife (Who's A Professional Photographer) A Thermos In The Shape Of A Camera Lens. It Always Gives Me A Mini Heart Attack When I See It Like This

I Bought My Wife (Who's A Professional Photographer) A Thermos In The Shape Of A Camera Lens. It Always Gives Me A Mini Heart Attack When I See It Like This

Tryenamy Report

Hendra Lim 1 month ago

well, he gives himself a heart attack

View More Replies...
View more comments
#20

I Didn’t Realize My Wife Left The Kids’ Presents In The Car Until I Checked The Rear View Mirror

I Didn’t Realize My Wife Left The Kids’ Presents In The Car Until I Checked The Rear View Mirror

Apatharas Report

Paige s 1 month ago

big NOPE from me, i would have crashed the car....

View More Replies...
View more comments
#21

When You Walk In Your Room And Have A Mild Heart Attack

When You Walk In Your Room And Have A Mild Heart Attack

pooptime1 Report

Raine Soo 1 month ago

Your belt is slithering away, sir.

View More Replies...
View more comments
#22

This Ultrasound Photo Scared My Husband

This Ultrasound Photo Scared My Husband

squidills Report

Slinkman 1 month ago (edited)

Rosemary's baby

View more comments
#23

Someone Spilled Their Smoothie In Class, And Now It Looks Like A Crime Scene

Someone Spilled Their Smoothie In Class, And Now It Looks Like A Crime Scene

Danielmg Report

David Martin 1 month ago

I'm genuinely curious now, what flavor smoothie even makes that spot-on, blood red color?

View More Replies...
View more comments
See Also on Bored Panda
#24

I Put My Son In A Halloween Onesie Without Thinking Much About It And Gave Myself A Heart Attack At 2AM

I Put My Son In A Halloween Onesie Without Thinking Much About It And Gave Myself A Heart Attack At 2AM

LadyJane17 Report

La Petite Morte 1 month ago

Aww.... Jack O Lantern butt!

View More Replies...
View more comments
#25

Ancient Whale Bone Over Top Of What Used To Be A Well

Ancient Whale Bone Over Top Of What Used To Be A Well

jahaight Report

Slinkman 1 month ago (edited)

'Always those ancient whale-bones getting in the way and scattering all around, so annoying....'

View More Replies...
View more comments
#26

My Wife Had A Mini Heart Attack As We Drove Past This House. Nobody Lives There

My Wife Had A Mini Heart Attack As We Drove Past This House. Nobody Lives There

Its_Obvi_PShopped Report

Bleh 1 month ago

Annabelle's cousin probably lives there

View More Replies...
View more comments
#27

I Had A Mini Heart Attack When I Saw This. Spotted In NYC

I Had A Mini Heart Attack When I Saw This. Spotted In NYC

bmagnusson Report

Avital Pilpel 1 month ago

Apparently they're selling clothes for the underpromoted market of 15' men.

View More Replies...
View more comments
#28

Sister Just Freaked Out, She Thought Someone Was In Her Flat. It Was Just Some Clothes Hanging Up In Front Of The Window

Sister Just Freaked Out, She Thought Someone Was In Her Flat. It Was Just Some Clothes Hanging Up In Front Of The Window

AndyWyant Report

Kaisu 1 month ago

I would be too terrified to go in at this point

View more comments
#29

Scared The Hell Out Of Myself

Scared The Hell Out Of Myself

littlefoot2080 Report

TC 1 month ago

Start praying...

View more comments
#30

Nearly Gave Me A Heart Attack Upon First Glance

Nearly Gave Me A Heart Attack Upon First Glance

SJT29 Report

Shalom Faya 1 month ago

Sounds like a hackers line 😁

View More Replies...
View more comments

Note: this post originally had 64 images. It’s been shortened to the top 30 images based on user votes.