There are no domestic animals because, as explained in the teaser trailer, this is a world were humans never appeared, and instead other mammals evolved. Since the domestication of cats, dogs, etc., is directly related to the presence and action of humans, it makes sense that there would be none of those in the Zootopia universe. I was mildly disappointed too that there are no Golden Retrievers in the movie, but nonetheless the reasoning is solid, and it's an amazingly furry movie otherwise. I can get behind the gorgeous-looking fox instead.
There are no domestic animals because, as explained in the teaser trailer, this is a world were humans never appeared, and instead other mammals evolved. Since the domestication of cats, dogs, etc., is directly related to the presence and action of humans, it makes sense that there would be none of those in the Zootopia universe. I was mildly disappointed too that there are no Golden Retrievers in the movie, but nonetheless the reasoning is solid, and it's an amazingly furry movie otherwise. I can get behind the gorgeous-looking fox instead.