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Gián Sao Hỏa
25 Mar, 2018
có thể làm tinh hoàn to lên khi cần
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Chalk up one more for the roaches.
Not only are they nigh indestructible (không thể hủy diệt được, rất bền vững), but they also appear to have an enviable (đáng ganh tị) skill (kỹ năng): growing bigger testicles (tinh hoàn). A new study reports that Madagascar hissing cockroaches can specialize as either “lovers” with big testes or “fighters” with large horns.
...As sexy as that sounds, the males often have to battle before they get the chance to woo a mate. They thrash one another’s rear ends, and use hornlike bumps behind their heads to shove at each other.
“After a bit of scrabbling and butting and trying to flip their opponent over, one or the other will back down, and then the female will usually mate with the winner,” says Durrant. “And he’ll switch to that more seductive hiss.”
Bài trước: Cô giáo Aoi là ai?
Tags: sex
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