Ever looked at a chimp and thought, 'I could take him'?
If so, then you are a bloody idiot, as this video of chimpanzees with alopecia fighting proves.
In the video, two chimpanzees with alopecia can be seen scrapping with 'normal' hair-covered chimps at Twycross zoo in Atherstone, UK.
Without dark coats covering their skin, it is clear to see how terrifyingly ripped the apes really are.
The animals' backs are extremely broad, their thighs are rippling with muscles and they have two absolutely massive... arms.
While chimps are our closest living relatives, with 95 to 98 percent common DNA between us, we shouldn't be too surprised by the henchness of the beasts.
Biologist Alan Walker, formerly of Pennsylvania State University, believes the apes are four times stronger than humans, according to The Sun.
Without hair, it is easy to see just how muscular the chimps are. Credit: SloggerVlogger
Steve Ross, of Chicago's Lincoln Park Zoo, said the difference in strength is due to the fact the muscle fibres of a chimpanzee situated closest to the bone are significantly longer and more dense than ours. Subsequently, chimps are able to generate a lot more power than we are despite performing the same motions.
As such, Mr Ross says it would be no contest should a human make the foolish decision to take on one of the animals.
According to The Sun, he said: "Chimps are incredibly strong and fast so humans are easily overpowered."
However, the apes have much less control over their muscles than we do and tend to use excessive force. So rather than challenge one to fisticuffs, maybe go for a game of shufflepuck?
However, a study in 2017 contradicted Mr Walker's claim that chimps are four times stronger than humans, suggesting instead that they are only around a third stronger than humans.
The research, conducted by Matthew O'Neill at the University of Arizona, indicated that the reason for their greater pound-for-pound strength was a higher ratio of fast-twitch muscle fibres, according to the New Scientist. O'Neill and his team also found the length of fibres enhanced strength, corroborating the theory of Mr Ross.
However, it is also believed that walking expends much more energy for chimps, which supports the notion that early humans evolved to walk and run long distances - sacrificing strength for superior endurance.
So in case you needed telling, if you ever find yourself in a showdown with one of these chunky chimps, flight is a better idea than fight. Then again, they will beat you in a sprint, and running can encourage them to chase you... So sit still and hope for the best I guess.
Oh and apparently direct eye contact can be interpreted as some kind of challenge, so don't do that either.
Featured Image Credit: SloggerVlogger