Some food harmful to dogs are:
Chocolate and Caffeine
Garbage Intoxication/Food Poisoning
Grapes/Raisins
Macadamia Nuts
Mushroom
Onion and Garlic
But I would say you should get a dog food.
you don't need license to breed dogs , as it it just as normal as a human breeding, but you do have too keep your pets in control as they may be caught by dog catching squads .