I would license them since it's the law. In my hometown, if you get caught with an unlicensed dog, it is a $500 fine. At the local county parks, the rangers do random dog checks and at the state parks, you can't even enter without proof of rabies and a license. However, my town does not have laws against owning any particular type of dog. The only law is that "pit bull" breeders are not allowed within city limits. So all pit bulls registered in the city of Syracuse MUST be neutered or spayed.