But what does a leash really mean?

This bit of mischief does not involve Elka, as I was work.

Somebody came into the library and said there was a brown dog running around in the park with no owners in sight.

So I grabbed my phone and went outside, figuring I could assess whether the dog was approachable and then either catch the dog and call the owner (provided said dog was tagged appropriately) or call the police to come and do their dog wardeny things.