Family Walks on All Fours

Siblings walk on all fours in rural Turkey. Three sisters and two brothers (one of whom is not shown) are almost exclusively quadrupedal.


Photograph courtesy BBC, from the TV documentary The Family That Walks on All Fours.

Five adult siblings who can walk only on all fours have been found in Turkey, researchers say. These human quadrupeds may provide clues to how humans evolved to stand on two feet.
Discovered in a remote area of southern Turkey last summer, the family of ethnic Kurds has sparked a scientific debate.