Although the name "Lamarck ... giraffes developed their elongated necks and front legs by generations of browsing on high tree leaves. The exercise of stretching up to the leaves altered the neck ...

is recognised as the scientist most associated with the theory of evolution ... higher branches to eat. Lamarck believed that the stretching elongated the giraffe's neck, which became a useful ...

Giraffes didn't always look like the elegant giants we recognize — ancient giraffes looked more like deer. But something happened over the past millennia that drove giraffes to evolve the ...