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For children and scientists alike the extraordinary shape of the giraffe has posed many questions.

Why they have such long necks has so far been partly answered.

However, exactly how they maintain this neck, and get blood to a head that is two metres from their heart, has remained unknown.

Now research reveals that giraffes have a small, powerful, supercharged heart that is different to that possessed by other similar mammals.

Scientists have published the discovery in the journal Comparative Biochemistry and Physiology, Part A.

This giraffe is suffering what looks like the world's biggest pain in the neck.

Five-year-old Amali from Tulsa Zoo, Oklahoma, had the unfortunate crick in transit from The Wilds park in Ohio.

It is feared that the hook might never be cured.