decorative couch potatoes

When people ask me what my Inner Dog's breed is, I generally tell them that it is a борзая собака (or "borzoi").  But what does "Borzoi" actually mean in Russian?  I looked it up at Wikipedia, which says that it is an archaic adjective meaning "fast".  It also says "as adults they are decorative couch potatoes".  Of course, Wikipedia is unreliable (like any other source) and sometimes trolls will insert jokes into the articles and you sort of have to already know the material to get the joke.  I have no idea whether "couch potato" is actually a good description for an older Borzoi.  The Russian Wikipedia article does not confirm this assertion.  Some Wikipedia articles in different languages are just translations of each other, but these two Borzoi articles seem to have been written independently, with non-overlapping sets of photos, etc.

Other interesting factoids:

• The borzoi is susceptible to OCD, which is not "obsessive compulsive disorder".
• In the anime Kuroshitsuji, there is a demon named "Sebastian".  The demon was named after someone's pet borzoi.  (Some people think that all were-animals are demons.)