I didn't know that Lottie, thanks for that info. That's shocking to know.
I haven't owned a dog since I was a girl, so have no idea about how to care for one these days.
Must admit on thinking about it, if I had a dog, I wouldn't leave it outside a shop anymore than I would a child, but I wouldn't take it to the shops with me either.
Some dogs are left home alone all day when their owners go out to work,( which I don't agree with) so I'm sure it must be ok to leave a dog at home when you go to the shops.