http://www.how-come.net/giraffeneck.html
Tuesday, 1 October 2013
Peculiar Animal Research
Giraffes have long necks for more than one reason. One reason is so that giraffes can eat leaves from tall trees, but it turns out that this is not the main reason. The main reason is fighting over a female mate. When two male giraffes fight over a female giraffe, what they do is they swing their heads into each other, and whoever has the longer, heavier neck, wins because often these collisions can be bone-breaking, and a stronger neck will obviously have an advantage. Whichever giraffe wins, mates with the female.
http://www.how-come.net/giraffeneck.html
http://www.how-come.net/giraffeneck.html
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That's interesting - a combination of natural selection based on food (tree leaves) and sexual selection in finding a mate. I guess that having to have a strong neck for fighting has kept the necks from evolving to be even longer - you would think that then they might be weaker?
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