Upload & Sell: Off
So it seems.
First of all, many thanks to everybody for overwhelming response!
Yes! I wrote, “I will be buying two lenses very soon. EF 70-200L f/2.8 IS for human portraits and EF 70-200L f/4 IS for pets.” with a good humour, and didn’t have any other intention. As I wrote in the original post, I got inspired by 70-200 f/2.8 Portrait thread and wanted to see potential of f/4 (small and light weight) version in that regard. After a while, I could see only a few portraits. That gave me a feeling for a moment that only f/2.8 version could make portraits. However, I got pleasure of seeing some nice pet images posted by Jefferson. That lens quality was noticed by chance.
Hope to see more images...