The giraffe has special valves in the veins of its neck, and extremely
elastic blood vessels which control the rush of blood to its head when it
bends over to drink. If these valves did not exist giraffes would lose
consciousness every time they tried to drink.
No two giraffe
coat patterns are the same.
Researchers believe that
they have a blue-black tongue to keep from getting sunburned while grazing.
The males, bulls, have
an identifiable pecking order. If a new male tries to join a herd the
dominant male will challenge him in the ritual neck wrestling. They
continue to butt heads until one retreats.