Yep, lots od weiner dogs too. The point is, few people in Manhattan have room for a large breed. And it is supremely unfair to the dog.
Depends on the breed and the dog... I know little dogs that are a lot more active and need a lot more exercise than some of the really large breeds, particularly after middle age.
I wouldn't own a dog in the city because of the walking issue. I don't walk behind my dogs with a baggie, they go out in the yard whenever they want :~D
Yes. I am dumbfounded that some folks keep large dogs like Great Danes in apartments.