...male and female cattle (including the many wild versions such as the African Cape Buffalo) and wildebeest (a kind of antelope) have horns, while in most other bovids only the males have horns. Both male and female caribou (a kind of deer) grow antlers each year, while in most other deer only the males do so.
But why? Read this.
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Sexual dimorphism in organisms is nothing new; it has long been known that in certain species one sex is often larger, flashier, or somehow markedly different than the other.
The response to Tuesday's post, currently at 97 comments, has been very interesting.
Of course there is the obligatory mother-in-law joke. Talk amongst yourselves and create your own.
I think if they fight for the female, then they need their horns. Ortherwise there is no use of it.
Here in Spain (and in South America) the jokes would not be about mother-in-law...