Short of a drug having unintended consequences and big lawsuits, I also agree and don't see any reason why ZTS should lose market share. I think it'll be a great long-term buy, although I do believe there are better spin-off opportunities in the market right now (and coming into the market in the near future).
Roy, did you mention earlier that Pfizer will be distributing ZTS shares to current PFE shareholders, but only this summer?