Horrified by the thought of the Hotdoll, the sex toy for dogs (although lovedoll might be more accurate than sex toy), I ran it down. In a monster truck. Jeph inspires me, betimes. Seriously, though, the Hotdoll does exist, but seems to be merely a prototype mocked up by a French product designer, one Clement Eloy
http://www.linkedin.com/pub/3/735/732, and is not for general sale... yet. So, technically, it does exist, but not commercially, and may never. Kind of like the Chevy Volt. My guess is that Eloy has made up a few models for special friends (there seem to be multiple sizes) in return for getting their dogs to pose with it. In other words, what he's really created is dog porn.
And yes, that shouldn't exist, since dogs, so far as I know, tend to have little disposable income.