Top 10 Weirdest Animal Genitalia

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the barnacle has developed the longest penis, relative to its body size, in the animal kingdom. The penis extends from the shell of the barnacle, and uses a swinging motion to locate a mate before releasing its sperm.??

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?The penis of the echidna has been described as the most frightening penis in the world.

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indeed, even an echidna will admit that it’s inconvenient, since it doesn’t correspond to the echidna vagina. In order to prepare for mating, two of the four heads must shrivel, and the other two must rotate to ensure a more comfortable fit.

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The female kangaroo has three vaginas and two uteri. Two of the vaginas lead to the uteruses, and allow sperm to reach the eggs; the third is used to birth joeys.

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Flatworms have both male and female genitalia – but that’s not so uncommon in nature to be noteworthy. What is unbelievable about flatworms is that when they mate, they fight with their penises in order to decide which of the mating pair will be the female and develop eggs

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The mating worms parry with their sharp penises, and the winner is the first one to penetrate the flesh of the other.

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The genitalia of the female bedbug is used only for laying eggs. To fertilise the female, the male bed bug uses a hypodermic penis to pierce the female’s exoskeleton, and inject his sperm directly into her body.

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The queen – in mid-flight – is usually surrounded by a dozen males trying to impregnate her. The first one to succeed in penetrating the queen will explode his sexual organs, with a pop sometimes loud enough to be heard. This detaches his genitals, and leaves them – and his sperm – with the queen.

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The clitoris of hyena females is almost indistinguishable from the male penis. They also have a scrotal sack, filled with fat and a fused vulva

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It is during this time of contact that the female may eat them. To escape this fate, the male can detach his palp and leave it to continue having sex with the female, while the rest of him scampers off.

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This arm, called the hectocotylus, has its own tail and organs of sensation to guide it to the female. The arm detaches from the octopus, and swims towards the female before pumping sperm into her. The male, essentially, has sex in absentia.

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The leopard slug is one of the largest slugs in the world, but it is the size of its penis – and the things it does with it – which earn it a place on the list. Since they are hermaphrodites, both mates in a pair will use their penises for mating. As seen in THIS VIDEO, the mating slugs intertwine, and dangle on a thread of mucous while hanging from a ledge. This position is needed to allow the intertwining of the pair’s penises. From the right side of each slug’s head, a penis almost as long as the slug itself expands and flails in search of its partner penis. Once this discovery is made, the penises entwine and pass sperm to each other, before retracting and passing it to the eggs.

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