Toronto is taking aim at mobile zoos operating in the city. Toronto launches public consultation to address exotic animal and mobile zoo problem
Mobile zoos are trucks with animals in cages that the owner and some workers make demonstrations with at schools.
Mobile is a city in Alabama, so I assume Mobile Zoo in that reference is a permanent location that happens to be in the city of Mobile. Mobile is also a verb meaning movable. So in the original post regarding Toronto, I assume it refers to "zoos" in trucks as drill noted.