Three more giraffe species than previously thought, scientists say

Giraffes are one of the world's most distinct and well-loved creatures, always thought to be one species.

But now scientists at the International Union for Conservation of Nature say we can welcome three more species of the world's tallest mammal.

It's not the first time researchers have suggested there are four species of these giants strolling on our planet, but the latest assessment puts an official stamp on it.

How did scientists work it out? And what does it mean for the future of the animal?

Scientists compared the skull size and head shape of different giraffes and concluded there was enough genetic diversity for four groups to be considered as different species.