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23 Feb, 2023
tưởng tượng hươu cao cổ làm tình khó khăn ra sao...
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Finding love can be difficult. But when you're bemoaning your own love difficulties, spare a thought for the giraffe. Giraffes don't go into heat like cats or dogs, don't have a breeding season, don't make mating calls and don't give visual clues that they're ready to mate. So how do giraffes find partners?
It's kind of gross, but this is how baby giraffes are made: a male giraffe — called a bull — nudges a nearby female giraffe — a cow — and sniffs her genitalia (ngửi bộ phận sinh dục). Sometimes he has to nudge her a few times, but eventually the female giraffe widens her stance and urinates for about five seconds into the male giraffe's mouth.
The male giraffe then performs what's known as a "flehmen response" by curling back its upper lip, baring its teeth, and breathing in with its nostrils closed for several seconds. (The name comes from a German word for baring the teeth.) The flehmen response is also used by animals like horses and goats to transfer scents to the vomeronasal organ above the roof of their mouth, a very sensitive component of their sense of smell.
Humans don't do flehmens; but animals do it when they want to get a good smell of something that interests them. In the case of an aroused male giraffe, he's hoping that chemicals he can detect in the female's urine — called pheromones, which can trigger a social response in some animals — will signal that she's in estrus, or fertile and ready to mate.
Once all these steps occur, giraffes mate in the manner of most mammals by the bull mounting the cow. Sex is conducted at a precarious height above the ground and lasts only a few seconds.
If she gets pregnant, the female giraffe will gestate for a whopping 400 days before she gives birth standing up, so that her baby giraffe is well developed enough to stand and walk when it's born.
Bài trước: Sống mãn nguyện
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