Nearly all mammals have a laryngeal nerve that goes from the brain stem to the larynx, but doesn’t go straight for the few inches, instead travelling down the neck to go around the heart. It’s a throwback to when we were ocean dwelling and had gills much closer to the heart.

In giraffes this nerve takes a 15 ft detour.

In something like a brachiosaurus which had a neck around 30 ft long, this would be a 60ft detour.

A great proof of evolution, of making do with what is there and adapting.