Octopus eggs, spider eyes, mouse brain ... Of Nikon Small World Photography CompetitionBy Bringing the wonders of the microscopic world to the general public, the competing photos showcase the ...

Arizona is home to world record holding animals and insects. That includes this cute critter, which is the smallest of its kind. Have you ever seen it?

These adorable creatures are the world's smallest primates, measuring up to 11 inches in length including their tails. The smallest species is the Madame Berthe's mouse lemur, which measures just ...