Ours is pretty easy. You can use any rifle that generates 1200 ftlbs or more muzzle pressure. It can have an ulimited size clip (100 round drum etc) as long as you do not put more than 8 rounds in the gun. No fully automatic rifles.
And for your doggie:
Veterinarian’s Best Dog Care Gas Relief/Digestive Aid Formula
Gas Relief & Digestive Aid Formula relieves intestinal gas and foul stool odor problems. Contains herbs and pro-biotic ingredients that aid digestion and support liver function. 50 chewable tablets.