The general consensus is that it's very likely bullshit, but still a(n) [almost negligible] sliver of possibility.
There would be a fair pool of knowledgeable people in the debate community (at least the more intelligent back-and-forth threads should be a good indicator) and snopes_dot_com should be REQUIRED READING.
And wow, lookit, the Lhasa Apso is not a Tibetan snow rabbit. I coulda been hoodwinked. =D