Biology

Have you ever seen a horse... swimming from below?
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Have you ever seen a horse… swimming from below?


Incredible shot by Kurt Arrigo!

 



African wild dog yawning
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African wild dog yawning


African wild dogs have a higher kill rate than lions and can take down antelope that weigh as much as 225 kilos (500 pounds).

 



Sigmund Freud described the testicles of eel
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Sigmund Freud described the testicles of eel


Our German-speaking readers will be happy to know that his 1877 scientific paper is freely available to read online (check our source!)

 



Tuna, champion of thermal regulation!
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Tuna, champion of thermal regulation!


With mackerel sharks, tunas are the only species able to maintain a body temperature higher than that of the surrounding water... even when it's 43 °F!

 



Beautiful granular poison frog
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Beautiful granular poison frog


Fun fact: after the female lays eggs, the male guards them and keeps them moist with his urine

 



A Rhinoceros Hornbill having breakfast
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A Rhinoceros Hornbill having breakfast


The courtship and bonding of these birds are critical, as the female must trust the male to provide her with everything when she is incubating and raising chicks

 



Hi! I'm the barred leaf frog!
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Hi! I’m the barred leaf frog!


I live in South America and like to climb on trees

 



This frog is called Pristimantis *jamescameroni*!
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This frog is called Pristimantis *jamescameroni*!


This tribute is a way to thank the movie director for his films, which helped raise environmental awareness

 



Hello world!
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Hello world!


A baby tortoise on the verge of getting out of its shell and discovering the world

 



Incredible picture of a 13-day old chicken embryo!
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Incredible picture of a 13-day old chicken embryo!


Blue is cartilage, red is bone starting to form

 



Hi! I'm Pithecophaga jefferyi, the Philippine eagle
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Hi! I’m Pithecophaga jefferyi, the Philippine eagle


I'm the Philippine national bird, and I'm critically endangered. Killing me in the Philippines can cost you 12 years in jail

 



Jelly beans with a smiley?
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Jelly beans with a smiley?


Not at all, these things are fish eggs, with embryos rolled up inside

 



This mouse doesn't feel (scorpion) pain!
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This mouse doesn’t feel (scorpion) pain!


This scorpion-eating mouse does not feel pain when bitten by a scorpion. The scorpion's venom blocks the pain instead of causing it, which could help develop new drugs in the future

 



Sphaerocoris annulus, aka the "Picasso bug"
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Sphaerocoris annulus, aka the “Picasso bug”


These colors serve as a warning for predators

 



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Fire ants are bad-ass architects!


They can build bridges, rafts and shelters *with their bodies only*