Every state issues hunting permits. Every hunter needs a permit, even for small game like squirrel. Hunting permits, also called hunting licenses, limit the hunter's age, firearm, hunting season, and quota they are allowed to harvest. Most states demand that hunters pass a hunting course before applying for hunting permits. Hunting permits and hunting licenses are only valid for one year, or one season. Each state has a list of animals that are unlawful to hunt. Hunters need to contact the department of Wildlife in the State they want to hunt in for hunting licenses.