No doors being opened this time. That's what you call a truly progressive depiction.

*disclaimer: actually, giraffes uses their skull as a flail, of which their necks are used to swing during the mating/superiority battles between males (known as necking). That's the reason for those two strange bulb-shaped horns.

And no, while their neck bones looks tough enough to withstand impact and battle it remains a vital structure for their survival, so no sane giraffes will ACTUALLY use their neck in battle as club.

Giraffes also have the same number of vertebrae in their necks as humans. They're just bigger.