Chimpanzee penis

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By Victoria Woollaston for MailOnline. An evolutionary biologist has compared the sizes of human genitals to gorillas and apes to look at why there is such a discrepancy between the species. Gentlemen, if you've ever been concerned about the size of your penis, take comfort in the fact that no matter how small it seems, it is one of the largest in the primate world.

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These apes supposedly have inordinate amounts of sex and never fight. Can this appealing story really be true? Reputation: Bonobos are miniature, sharing, caring chimps, living in hippie communes with no aggression and lots of sex.

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Most people are aware that human males do not have calcified bones in their penis. If this seems obvious, did you know that most other species of mammal have a bone in their penis? Well they do, and it's called a baculum.

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This page has been archived and is no longer updated. Published online 9 March Nature doi Sex would be a very different proposition for humans if — like some animals including chimpanzees, macaques and mice — men had penises studded with small, hard spines. Now researchers at Stanford University in California have found a molecular mechanism for how the human penis could have evolved to be so distinctly spine-free.

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If you've ever wondered whether humans, do in fact, have a bigger dick than most apes - and you don't work in a zoo - then you probably have issues. But nonetheless you would be on to something. Humans have a much longer and wider penis than the other great apes.

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Humans are often claimed to have the largest penises among primates. This is true for penile girth, but not for length given that chimpanzee and bonobo erect penis length is comparable to that of humans erect length 14 - 17 cm. Unlike humans, chimpanzee and bonobo penises are filiform tapered into a narrow tip with no visible glans penis.

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Humans have a much longer and wider penis than the other great apes. Even the largest of gorillas, more than twice as heavy as a human, will have a penis just two and half inches long when erect. However our testicles are rather small.

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Though chimpanzees and humans share about 99 percent of the same DNA, numerous physical and behavioral traits separate us from our closest living relatives. But are we different even when it comes to sex? Just how do chimpanzees "do it? Chimpanzees Pan troglodytes live in hierarchical communities of several dozen individuals.

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All rights reserved. Men have lost the DNA code that once made human penises spiny, according to a new analysis of the human genome. Penile spines, which are still present in several modern animals, are usually small barbs of keratin—a type of hard tissue—that line the outside of the organ.

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Anonymous, age and sex unspecified Dear Carole, Why are women so obsessed with the size of a man's cock — wanting ones 6 inches and over and kicking others aside when they really should be concentrating on the emotional connection and love being shared, putting the size of the man's cock right out of her mind? Carole replies: The origins of the primate sex drive go back more than 60m years to the late Mesozoic era when the first primate evolved. A lot of sex has taken place since then, and a significant proportion has been motivated by female choice between rival males.

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