I'd never seen the Genpets site before- it's really well-done and looks real! I was getting a little creeped out too, but was just sure it couldn't be real, especially considering some of the FAQ questions and answers. If you google it you'll find that it's just an art installation that's been exhibited in the US and Canada. That site sure looks real though!
I didn't realize they had hypoallergenic cats- I thought the only option out there was the Sphinx:
I bet the hypoallergenics will sell MUCH better!