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Win the fight, become the dad!🤯
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These Animals Fight To Avoid Being The Mother. Scientists Named This "Penis Fencing"
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Ano ba ang “penis fencing” na isinasagawa ng mga flatworms upang makaiwas sa pagiging ina?
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Some species of flatworm have penis sword fights to see who gets pregnant! I love this fact and always will, you should too!! #pubdad #natureismetal #naturefacts #flatworm #wtf
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Thescaryfact ™ on Instagram: "Some species of flatworms reproduce through a behavior known as p@nis fencing. Each flatworm has two bifurcated p@nis structures and attempts to st@b the other during mating. The worm that successfully penetrates its opponent remains male, while the loser is forced into the female role and becomes impregnated. This violent reproductive strategy evolved because producing eggs requires far more energy than producing sperm — so neither worm wants to lose. It’s one of t
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