Examples you might use the number for:

You find a runaway dog that clearly belongs to someone.

There is a dead animal on the road that you personally didn't hit and can push off, but still needs to be disposed of/reported

You find a lost wallet and aren't able to visit the police on site today

There are surely quite some more instances where you should contact your local police and don't want to go to your national emergency number. Two of these cases happened to me where i did have not clear enough mind about searching for a local number and was happy to have it ready.