So, we are discussing the "portrait" of a portrait forum challenge...hummm. 

Yes, there are portraits of animals, done and set and presented as a portrait and not just another pet shot.  Portrait generally means "face" or just enough more to still be a portrait and not more...so how to define?  Don't ask me. 

This is my thought for the moment. Since the challenge is started, some of the discussion is moot and votes will be taken when the challenge is done.  Fair enough?