[decimon]

I thought they proved long long time ago that all domesticated dogs came from the tibetan wolf.

"The longest river of China and of Asia, flowing about 5,551 km (3,450 mi) from Xizang (Tibet) to the East China Sea."

http://www.answers.com/topic/chang-jiang

[mamelukesabre]

The tibetan wolf is a very rare subspecies of the eurasian wolf and very unique. It does not exist in south east china. There are striking differences between the tibetan wolf skull and the skulls of all other wolves. There is also some subtle different behavior.

My own belief is that dogs are not all from tibetan wolves, but that tibetan wolves are all partially domesticated.