From Moving Freely to Stabbing the Opponent’s Abdomen, The Remarkable Evolution of Male Animal Traits

2024-04-16

The Malayan tapir, which can move its penis freely and nimbly, is in danger of extinction, with fewer than 2,000 in the wild.

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The mating of mallard ducks may seem idyllic at times, but for the mallard ducks, it is a “do-or-die” struggle.

A male bedbug tries to thrust his needle-like penis into the female’s abdomen. It doesn’t even look like mating anymore.

The phallus bone in the penis of a walrus is scientifically called a baculum. Also known colloquially as “love arrows.”

The sexes of 32 animal species are introduced with artistic watercolor paintings. There are also detailed pencil drawings of the penis of each animal, which are not included in the article.

Biology and Sexuality: Mysterious Optimal Strategies” by Emmanuel Puidova, published by Guryudo.

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