That’s a good question. There are several theories as to why giraffes have long necks. One theory is that they need a long neck to reach high branches to get food. This is called the high-feeding theory and it was proposed by Charles Darwin. Another theory is that their long necks help them win fights against other male giraffes. This is called the sexual selection theory and it was suggested by some biologists in the mid-1990s. They argued that male giraffes use their necks as weapons to swing their heads at each other and compete for females. The most recent theory is that their long necks help them mate with female giraffes. This is called the necking theory and it was proposed by a team of researchers in 2016. They found that male giraffes with longer necks tend to have more offspring than those with shorter necks, because they can reach more females and avoid competition from other males.
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