Giraffe DNA study identifies four distinct species Genetic research into giraffes has revealed there are four distinct species of Earth's tallest mammal, not one as .
WASHINGTON (Reuters) - Genetic research on the world's tallest land animal has found that there are four distinct species of giraffe, not just one as long .
One of the most iconic animals in Africa has a secret. A genetic analysis suggests that the giraffe is not one species, but 4 separate ones — a finding that could .
