Well hear all those walk-the-liners.. The law this and that..understood but..hey.. on a forum thread visited by 20 people, weekly

I'll give you a hint that many of your preferred photograph subjects, namely the pets, are very frequently used as status symbols and your desire to photograph them might even reward you with interesting conversations with their owner.

Photography is about human interaction, observation and not necessarily lawsuits.

@ chenliangchen . Shanghai / London sounds like extremely fertile ground for this subject. You have virtually won (by an anonymous selfie?)

@ Gerbick :Someone with imagination Apple store: sounds like great place to start and check out.