You could put in this way.
As you know there are fews buildings allows dog. When you make a complain. The final results has two. One the owner and dog to move out the building. Two the dog is been abandond.
You can talk to the owner first. Tell the owner, to put mask on the big dog while in the building area. So other resident could share the lift.
Give the chance for the dog. Before you make a formal complain.
其他業主住客都唔敢搭? It s really depends on the person, if the person hate dog, what ever others do, hardly can change the person thought.