Pedigree Query

I just saw this on an Australian racing site. Tragic situation for the trainer, owners and fans of this great race mare. My heart goes out to them.

http://www.thoroughbredtimes.com/racing-news/2012/04/04/2011-cox-plate-winner-pinker-pinker-dead.aspx

It can happen to any horse at any time ,usually the good ones. Apparently it was a reaction to Pentosan which I find hard to believe but it's very sad.....the trainer is understandably inconsolable.