Bonds between and within water molecules? How do the bonds within a water molecule (between the hydrogen and oxygen) differ from the bonds between water molecules which also occur between hydrogens and oxygens?
Blue-eyed black lemur. Winner of best eyes is the blue-eyed black lemur. It's a tiny bit of a misnomer because only the males are black; the females are a reddish-brown color. Both colors help their striking blue eyes stand out.
Some eyes have a dark ring around the iris, called a limbal ring. Eye color in non-human animals is regulated differently. For example, instead of blue as in humans, autosomal recessive eye color in the skink species Corucia zebrata is black, and the autosomal dominant color is yellow-green.