You can generally almost ALWAYS spot a scam of this type based on the language usage in email - clearly english is not a first language and they use a rough translator.
I would put money on it this is a scam - if you found this ad on a legit site, I would send the add and all correspondence to the website admin.
ETA: These type of scammers often steal/cut and paste REAL ads and pictures, and repost them on less legit sites like craigslist or kijiji. They ALWAYS ask for a deposit up front and promise to "arrange delivery". I went round and round a few years back with a rental house I made the mistake of posting on craigslist, the picture and my ad was reposted verbatim all over the internet.
It might be worth taking the mares bloodlines, looking up the ACTUAL OWNER and passing this ad and information on to them so they can take further action if they choose to.
Last edited by Indyhorse; 04-07-2010 at 08:39 PM.