Yes, cat wine is a real thing. Apollo Peak is the name of "the original cat wine", so their tagline claims. However there have been others ready to get your kitty in a merlot mood. 

Pablo and I had a discussion about being a "pet parent" rather than a "pet owner". So is it pet abuse to get your cat drunk? I didn't think so. I used to give my cat some catnip. Either way, there has to be a market for this wine.