What's Really
in Pet Foods?

The picture on the bag and the business behind it

Americans spent about $68 billion on pet food and treats in 2025.⁴ A market that size wants you to believe you are buying what the front of the bag shows. What most owners never hear is that the pet food industry grew up as an extension of the human food industry: a place for the parts of the animal, and the grain, that do not make it to a grocery shelf. A handful of very large makers hold most of the market, and many of them are divisions of companies that also make human food, which gives them a ready supply of ingredients and a ready outlet for what is left over.¹

None of that makes every pet food bad. It does mean the label, not the picture, is where you learn what you are paying for. Here are the words that matter.

Seven label words in plain language

• By-products

  The clean parts of a slaughtered animal other than muscle meat: lungs, spleen, kidneys, liver, blood, bone, and stomachs and intestines emptied of their contents. Hair, horns, teeth and hooves are excluded.² Organ meat can be nutritious; the trouble is that quality and composition vary from batch to batch, and a generic "meat by-product" does not even tell you the animal.

• Meal

  Rendered. The material was cooked under heat and pressure to drive off most of the water and fat, then ground to a uniform powder.² "Chicken meal" is rendered chicken. "Meat and bone meal" is rendered mammal tissue, bone included, from unnamed species, and may include carcasses rejected for human use.

• Rendering

  The cooking process behind every "meal". It kills bacteria, which is the point, and it also alters or destroys the natural enzymes and some of the proteins in the raw material. What goes in rendered is no longer live food.

• Animal fat

  The source of that pungent smell when you open a new bag. Rendered fat, and often recovered restaurant grease, is blended, stabilised with preservatives and sprayed onto the finished kibble to make an otherwise bland pellet taste good.¹ It is why a dog will eat a food that has little else going for it.

• Grains and fillers

  Corn, wheat, soy and rice now make up a large share of most dry foods, often two of the top three ingredients. How much of a grain a dog or cat can actually digest varies a great deal; white rice is well absorbed, wheat and corn far less so. Peanut hulls and similar "fibre" add bulk and little else.¹ Watch for sorghum too, often listed as "milo": a drought-resistant cereal grain that pet food makers increasingly use in place of rice because it costs less. In a feeding study, swapping half the rice for sorghum lowered how much protein and energy the dogs could actually digest, and the grain's tannins are known to inhibit digestive enzymes.⁵

• Preservatives

  Dry food has to sit on a shelf for a year or more without the fat going rancid. Synthetic antioxidants such as BHA, BHT and ethoxyquin do that job cheaply; "mixed tocopherols" (vitamin E) and rosemary do it more gently and for less time. Look for which one your bag uses.

• "Complete and balanced"

  A regulatory claim, not a quality grade. It means the food meets AAFCO's nutrient profile for the life stage named on the bag, either by formulation or by a feeding trial, and can be fed as a pet's only food.³ It says nothing about where the ingredients came from or how heavily they were processed.

What every one of them has in common

Whatever the quality of the ingredients, the finished food has been cooked, usually twice. Rendering first, then extrusion: the heat-and-pressure process that puffs the dough into kibble. The live enzymes that were in the raw ingredients do not survive either step; that is what cooking does. A premium food and a bargain one differ enormously in what goes in. They are alike in what comes out: a shelf-stable product the body must digest entirely with enzymes of its own making.

That is our angle on all of this, and it is why we exist. The better the food you choose, the more your pet has to work with, so choose well. Then put back the one thing no bag can carry. Our All About Enzymes guide explains what live enzymes do once they are back in the bowl.

How to read a bag in under a minute

We check five things before a food goes on our recommended foods list, and you can check all five standing in the store aisle.

1. Human-grade ingredients. Ingredients you would recognise from your own kitchen. Everything in the run should be fit for people to eat.
2. Meat-based, and watch for the meat trick. A whole meat ("chicken") is weighed with its water, so it lands at the top of the panel, then dries to about a sixth of that weight. A meat meal had the water removed first. The real thing reads "Chicken, chicken meal" or "Lamb, lamb meal" in the first two spots.
3. Naturally preserved. Mixed tocopherols or citric acid (forms of vitamins E and C). See BHA, BHT or ethoxyquin and put the bag down.
4. Bioavailable vitamins and minerals. Real fruits, vegetables and plants in the middle of the panel, not a synthetic vitamin pack the body mostly flushes out.
5. Digestive enzymes and probiotics. Listed near the end of the panel, added after the food cools. Only the better foods bother.

One more thing we check: who makes it. A company shows you what it believes in by its cheapest bag. If the premium line passes all five while the standard line is by-products, fillers and harsh preservatives, that is one company with two standards. Our recommended pet foods guide is every brand we have vetted against these rules.

Putting back what cooking took out

Once you have the best food you can manage, the Core Foundation is how we put the live part back. Sprouted Granules go in the bowl; Antioxidant Treats go by hand. Both are made from live sprouted soybean meal, a whole-food source of live enzymes and food-based antioxidants that gives the body the raw material to make its own antioxidant enzymes.

The Core FoundationSee the Core Foundation →Sprouted Granules in the bowl and Antioxidant Treats by hand: live-food enzymes and antioxidants, made from live sprouted soybean meal. Where every pet starts.

Not sure what your pet's food is doing for them? Book a free consultation and bring the bag.