Â¹. The commercial pet food industry started in 1860 with James Spratt's invention of the first dog biscuit in England. Made from vegetables, beef blood, wheat, and beet root, Spratt reportedly was inspired by observing sailors throwing hardtack to dogs at the docks.he commercial pet food companies do know a lot more about what cats need, but that still doesn't mean that the pet food industry is making food that is best for your cat.
The second thing that makes farts smelly is consuming foods that are high in sulfur. Foods such as cauliflower (and the rest of the cabbage family), eggs, cheese, garlic, onions, and meat are notorious for producing smelly farts because of their high content of sulfur.
Taking large doses of supplements that contain calcium, magnesium and zinc might also lead to smelly gas by causing digestive upset. Magnesium taken in high doses acts as a laxative and may therefore cause gas and diarrhea, while calcium and zinc overdoses also contribute to digestive upset.