Tibetan Yeti

Tibetan Yeti also known as  Abombinable Snowmen are natives of Earth and the originals of Robot Yeti. They dwell in the Himalayas in Tibet.

Little is known about them. They are large, furry, probably semi-sapient and humanoid. They are naturally timid.

They were generally thought to be myths by Humans from the West. Professor Travers went on an expedition to find them. After an adventure with the Robot Yeti, Travers finally spotted one and went in pursuit. (DW: The Abominable Snowmen)

Behind the Scenes
Because of the "wiping" of The Abominable Snowmen from the BBC's archives, no photographic documentation of a Doctor Who "real" Yeti exists. Doctor Who historians believe that the production team merely used one of the same costumes as one of the robot Yeti, with some of the padding removed.