All the Latest Game Footage and Images from Giraffe Evolution Long neck, camel-like shape, leopard-like coloring and horn-like ossicones don’t come out of nowhere: giraffes are naturally bizarre. What ...

In humans, chronic high blood pressure forces the heart to work too hard. The muscle of the left ventricle thickens in defense, a condition called hypertrophy. Eventually, this leads to fibrosis, ...

But this extreme feature comes at a cost: namely the energy required for the heart to pump blood up to the head against gravity. As a result, giraffes have high blood pressure, more than twice that of ...