I'm thinking of calling the police on my neighbor for sleeping in
That seems like overkill.
My cat keeps me awake all night. If I can't sleep no one should.
It's only okay to call the police for real emergencies. Your lack of sleep is not an emergency.
I think anything can be considered an emergency if people want it to be.
I know it can feel that way at times, but this is not the kind of emergency that requires first responders. Furthermore, your neighbor has done absolutely nothing wrong, so calling the police on him would be illegal.