Dogs running loose is a threat to life and pets.
They can be seriously dangerous.
Please don’t pretend to be oblivious to the difference between cats and dogs and being kept in yards, the dog pet door releases the dog into the yard, the cat pet door releases it to the outside.
In many fine neighborhoods the cats move freely from indoor and outdoor, that is absolutely common in beach communities.
What about the neighbors who don't want someone else's cat in their yard? What rights do they have?
Yeah, the shih tzu is a known ferocious breed.