[Paladin2]

You apparently have a real problem with confusion between dogs on and off private property.

[muawiyah]

Look, you are confusing human beings with dogs. Dogs are assumed to not read well, nor to understand property lines. Therefore, a dog's owner is REQUIRED to restrain or control the dog.

That's an absolute.

Some people install fences of various heights ~ and I've heard that sometimes that can't be too high!

The animal here was supposedly restrained by an electronic fence. They don't always work. Besides, not everybody knows about them.