Unless a service animal, or has a reason to be there, I don’t think it’s good etiquette. I have no issues with dogs, and other animals, in places which can accommodate them. However, malls have not been designed that way. Also, as someone with a sensitivity to animals in general, I’d rather not have irritated skin because someone decided to let their dog lick around the chairs.

Fine as long as the dog knows not to poop or pee on the floor...or bite anyone or bark at anyone...

I would not take a dog where I myself would not feel happy due to noise and crowd. Also dogs might not well behave due to circumstances of being crammed between people.

As long as it's not pissing and shitting in there, I'm fine with it.

Unless it’s a legitimate service animal, please keep your pets at home.

Personally, I don't think I much care as long as they are not chewing and/or peeing and/or crapping on anything or running around barking, the real problem is the owners, not the dogs - I absolutely do not trust most people to control their dogs in a thoughtful way, considerate of others