© Press Association PhotoSir David Attenborough says there is 'convincing' evidence the yeti exists
Sir David Attenborough believes there is 'very convincing' evidence that yetis exist.
Speaking on Friday Night With Jonathan Ross, the revered wildlife expert said: 'I'm baffled by the Abominable Snowman - very convincing footprints have been found at 19,000ft.
'No-one does that for a joke. I think it's unanswered.'
The yeti is an ape-like creature said to inhabit the Himalayan region of Nepal and Tibet.
A photograph of a mysterious footprint, rumoured to be that of the yeti was taken in the Menlung Basin in the Himalayas in 1951.