You don't need to be a biology wizard to know that two different species of animals cannot originate from the same mother. Or so we've been led to believe anyway. But take a look at these pictures and prepare to have everything you've ever known turned upside down!

Well ok, not quite. But these animal sisters and brothers from other mothers look so bizarrely similar that you could be forgiven for thinking that they share the same parents. Take a look at this list compiled by Bored Panda to see what we mean. Don't forget to vote for your favorite, and feel free to send us your pictures if you have any pets that look suspiciously like siblings!

#1

Brother From Another Mother

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Luis Milian 3 years ago

even the face expression is the same

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#2

Brother From Another Mother

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Rita Duncan 3 years ago

I love this! My favorite dog is an Australian shepherd and my favorite cat is a calico!

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#3

Brother From Another Mother

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Huong Linh Vu 3 years ago

oh my, the horse looks out of this world. Stunningly beautiful.

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#4

Brother From Another Mother

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Sadie Ann Foy 3 years ago

Okay. The cat's cute, but that bunny is so fricking adorable! His chubby cheeks!

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#5

Brother From Another Mother

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Peter Sundelin 3 years ago

Här är det bäst med korta tyglar

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#6

Brother From Another Mother

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Kirsa Rasmussen 3 years ago

The dog thinking: I love my big brother <3

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#7

Brother From Another Mother

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Heather Turnage 3 years ago

Bambi & Thumper!

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#8

Brother From Another Mother

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Shauday Smith 3 years ago

That horse is sitting on that log! that's awesome...

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#9

Brother From Another Mother

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Michelle quehl 3 years ago

The pig is unamused

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#10

Brother From Another Mother

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Sadie Ann Foy 3 years ago

I'm weird. I LOVE RATS! And sphinx cats are adorable. No one agrees though.

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#11

Brother From Another Mother

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Amanda Panda 3 years ago

"If you tell anyone about this ... you are dead!"

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#12

Brother From Another Mother

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Wynk2u 3 years ago

Love the double head tilt :P

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#13

Brother From Another Mother

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Julia Wolfe 3 years ago

So cute!

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#14

Brother From Another Mother

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Michelle quehl 3 years ago

Who says only people can ride horses

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#15

Brother From Another Mother

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Desiree Sylvia 3 years ago

i told you not to dip into that black ink bucket

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#16

Brother From Another Mother

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Jessica Lisle 3 years ago

Both sleepin the same way, too cute!

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#17

Brother From Another Mother

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Katie Schroeder 3 years ago

The bunny got his hair done for this pick obviously lol

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#18

Brother From Another Mother

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Miel Tomassini 3 years ago

What kind of doggy is this! It looks stunning

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#19

Brother From Another Mother

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Wynk2u 3 years ago

That mini horse looks like he's saying, "Gawd, they never shut up!" Lol

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#20

Brother From Another Mother

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Desiree Sylvia 3 years ago

aaawww i want both

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#21

Brother From Another Mother

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Tammy Chapman 2 years ago

Cute pair. I love that horse!!

#22

Brother From Another Mother

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Amanda Panda 3 years ago

When you and Bae get in an argument and she's waiting for you to apologize first.

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#23

Brother From Another Mother

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Meg Bee 3 years ago

How cute!!!

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#24

Brother From Another Mother

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António Lima 3 years ago

"Yes master human?"

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#25

Brother From Another Mother

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Koetjoe Berjoeang 3 years ago

Dog eyes said " dont disturb my bacon or you die "

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#26

Like Attracts Like

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.gas. 3 years ago

"You said there was a gate."

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#27

Ljubica & Ljubo

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Tammy Chapman 2 years ago

Both have beautiful eyes too.

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#28

Brother From Another Mother

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Michelle quehl 3 years ago

Those eyes on that cat are incredible

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#29

Brother From Another Mother

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Antonelio Angel 3 years ago

Friend, why are they keeping you behind that barbed fence? I'll help you runaway!!!

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#30

Brother From Another Mother

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3 years ago

Benny the Bull terrier vs Dexter the Chihuahua

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#31

Woody And Pablo

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Misty Pal 2 years ago

wow cute! they are so beautiful!

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#32

Love At First Sight

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Tammy Chapman 2 years ago

Awwwww! Adorable.

#33

Arctic, The Samoyed And I Am,the Cat...best Buddies

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Cherie 3 years ago

Sharing in the shame... best friends!

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#34

Sisters From Another Mother.

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Tammy Chapman 2 years ago

Wow....these two could hide in a shadow and you would never know they were there. Beautiful.

#35

Oh No, She's Kissing Me! Xoxo. Kara & Cheese

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Alexa Steierlein 3 years ago

That face... :-D

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#36

Petel And The Street Friend

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Cherie 3 years ago

I think the cat looks awfully smug... 'haha, I don't need a leash and yeeew dooo!'

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#37

My Trio

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Touche 2 years ago

Omg, I just found out Bob is a cat! I always thought his barking was a bit weird!

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#38

True Pals

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Tammy Chapman 2 years ago

Are we sure the one on the left is a dog??

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#39

Definitely Brother From Another Mother

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Suzanne van der Bilt 3 years ago

Beautiful dogs, wanna hug them <3

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#40

Give Me A Kiss Brother.

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Cherie 3 years ago

'Sorry, sweetie! I'll get the bail from our GoFundMe soon. Promise!'

#41

Kiss Kiss ????

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#42

Everything Is Better In Black And White :d

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Tammy Chapman 2 years ago

Double cute.

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#43

3 Years And 1 Breed Apart

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#45

Cow?

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Satomi Sunagawa 2 years ago

so cute

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#46

Golden Doodle Boy (10) Bolonka Zwetna Girl (5mt)

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Misty Pal 2 years ago

whoa look at that, they're adorable

#47

Is Breakfast Ready Yet?

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Corey May Lace 2 years ago

"You're not gonna feed me before him, right?"

#48

Dog, Cat, Lill Cat Baby

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Hiền Anh Lê 2 years ago

Just in case they will blame me on every damage, this pic will prove

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#49

Beefus The Dog And Motley The Pup

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#50

Annoying Little Sister

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Anna Bender 2 years ago

they don't look anything alike.

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#52

My Duo :)

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#53

Scooter And The Beeps

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#54

Family

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Tammy Chapman 2 years ago

Adorable!

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#55

Brother & Sister

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#58

They Even Match My Decor!

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Kaitlyn Le 2 years ago

"I did nothing..."

#59

Sleeping Is Something We Do Together

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#64

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