In my mother's apartment building there a guy who uses his kayak in the swimming pool to practice his rolls etc. You can imagine the angst when parents bring little Johnny down for his swim. Or when tenants have a rowdy party around the pool. She is grateful that COVID rules effectively shut the pool down for a couple of years. So yeah I can totally imagine someone wanting to let their dog swim in the pool

Oh god you don't even know. A pool in a shared living building/setup is a recipe for every sort of possible disaster known to man, and some known only to an advanced AI trained on horror movies.