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Why a raw food diet for dogs and cats may be the best

written by

Marie Reedell

posted on

December 16, 2022

At Millerā€™s Bio Farm, we believe in raising animals the way nature intendedā€¦ and that includes pets. However, the modern conventional pet food industry doesnā€™t seem to agree. Letā€™s take a step back to understand why.

Domesticated dogs and cats are descendants of wild animals

Dogs are descendants of wolves and would hunt for larger mammals like elk, deer, and rabbit. Cats are descendants of wildcats and would hunt smaller mammals like mice, rats, and voles as well as fish and birds like ducks, turkey, and small perching birds. 

Dogs and cats wouldnā€™t make a fire and cook their prey. They would eat it raw. This is what their bodies are naturally designed to digest and what is biologically appropriate. 

Thousands of years ago, dogs and cats were domesticated, bred to live closer to humans and have certain traits. Humans did this for a couple reasons: (1) They enjoyed their companionship; and (2) They provided a service for their caretakers.

Some dogs are fantastic protectors. They will bark to alert an intruder or guard livestock. On our farm, we have dogs to guard the chickens and turkeys. Some dogs are great trackers and retrievers, which can be a great help if you are a hunter or sailor. 

Cats are wonderful hunters. They are natural pest control. By keeping the mice population down, they can help save your animal feed and human food and maintain a more sanitary environment. We have cats on the farm for exactly this reason.

Once dogs and cats became domesticated, they continued to hunt as their primary food source but would also be fed scraps from their caretakersā€™ meals - whole meats, fruits, vegetables, and grains. 

Over the past hundred years, processed dry and canned foods have become the standard. This is for convenience and cost savings. However, it takes millions of years for significant evolutionary changes (dogs and cats are 99% identical to their wild descendants). 

This trend has damaged the health of our pets. Just like with humans, with a conventional processed diet, nutrition is simply not as bioavailable. And, I mean, dogs and cats arenā€™t designed to digest soy protein, pea protein, potatoes, synthetic vitamins, etc. Dry food is a big concern and can lead to dehydration, urinary tract issues, and kidney disease (if your pet is not drinking enough water). This is a high concern for cats who are not naturally drawn to drink water.

A species-appropriate raw diet is what dogsā€™ and catsā€™ bodies handle best. It makes all nutrition bioavailable, supports a long life in good health, and can help heal from an array of health issues.

Raw diets are naturally low in carbohydrates and high in moisture. The idea is for meals to mimic what a wolf or wildcat would eat in the wild. A species-appropriate meal for most healthy adult dogs and cats can be 80% muscle meat and fat (with 10-15% fat), 5% liver, 5% other offal, and 10% soft bone. 

Please keep in mind that, just like with humans, no pet diet is "one size fits all". The "foundation numbers" (80% meat, 10% organ, 10% bone) can vary for each pet's individual needs. Here are some examples:

  • Bone percentages can vary from 6-15% for adult cats and dogs.
  • Puppies and kittens need special care and their percentages are completely different and will change as they continue to grow. Puppies may need up to 20% bone.
  • Some pets have health conditions, which require different diets. For example, a pet with pancreatitis will need to be fed less fat. Another example is a pet with kidney disease, which should be fed a "low phosphorous diet".
  • Some pets will also require different sources of calcium (such as eggshells) for optimal health.

The amount you should feed will depend on your particular pet. How old are they? How much do they exercise? How fast is their metabolism? The latter two may change with the season. A good amount is usually 1.5-3% of an adult animalā€™s ideal body weight, fed in 2-3 meals per day. 

Keep in mind that feeding rotationally (in other words, not the same thing every day or week) and supplementing may be necessary to reach optimum nutrient levels. Adding in some kelp, whole veggies, egg yolks, or raw dairy is great for adding extra nutrition, healthy fats, and probiotics. 

You can purchase pre-made raw diets or make your own at home. 

Premade is obviously easier, but making it at home has some benefits:

  • Can be made in bulk quantities and frozen. When frozen for more than a month, this should also kill parasites, if there are any. 
  • Can be more cost effective when you source individual ingredients in bulk.
  • You have complete control over quality and ingredients. This may be particularly important for picky eaters or pets with allergies. 

If youā€™re currently feeding processed dry kibble or wet food, please donā€™t be stressed. There are easy ways to add some raw food or transition to a raw diet. 

Here are some things to try:

  • Put a raw egg yolk on top of the food.
  • Pour some raw half-and-half or milk or yogurt over the food. Raw A2/A2 dairy can boost your petā€™s health.
  • Mix some of the scraps from the meat (or myoglobin, the red liquid left in the bag) left from trimming into their food.
  • Pour unseasoned bone broth over the food. I know this is cooked, but it provides lots of moisture and nutrition. Make sure to avoid onion, which is toxic for dogs and cats.

You can continue to feed raw and cooked foods together. Thatā€™s perfectly fine. The more raw food you feed, the better your petā€™s nutritional needs will be met.

Or, you can continue to add more and more raw foods to their meals until you are feeding 100% raw. A slow transition to raw is best. This will avoid shocking your pet's digestive system. 

And, by the way, mixing up your petsā€™ food with some variety is excellent pet enrichment.

Just like for humans, there is no one diet that is appropriate for every individual animal. But, just like humans, quality matters. Be sure you are feeding your pets high quality and ā€œhuman gradeā€ foods.  

By ā€œhuman gradeā€, I donā€™t mean feeding your pets human food. I mean that you should feed them foods produced to the same standards as your food. 

For example, the pet industry allows sick animals or animals that mysteriously died to be made into pet food. The human food industry does not allow that.

Another example is that the pet industry allows tainted raw milk with dyes and additives to be sold as pet food. The human food industry does not allow that. And, thatā€™s why we go above and beyond to produce our A2/A2 pet dairy to the highest standards.

You might be wondering - what about e. coli and salmonella? The internet tells me that itā€™s a risk for my pet.

Keep in mind that your petā€™s digestive system is different from a humanā€™s. Itā€™s shorter, food moves through it more quickly, and the stomach juices are much more acidic. All of these factors help neutralize potentially harmful bacteria. A healthy dog or cat with a normal immune system should have no problems. 

One more thing to keep in mind - when you start adding raw foods to your petsā€™ diet, you may notice a change in their stool. 

Because nearly 100% of the nutrients are bioavailable, pets on a raw food diet typically have smaller, firmer stools. And there may be some inconsistencies when youā€™re transitioning to a 100% raw diet.

I recommend just getting started. I know when I did, I was amazed at how my pets preferred the raw diet.

What do you feed your pets? Have you tried a raw food diet or will you consider it in the future? Have you figured out any tricks for making pet food at home?

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Our bone broth tested A+++ for heavy metals šŸ„³ NATURAL AND CLEAN

*Originally published on 3/14/25. Updated on 4/15/25. Over the past few months a bunch of people asked us if we tested our bone broth for toxic heavy metals. When we get the same question a lot, we of course look into it. My first question was --- Is there an issue with toxic metals in bone broth? As it turns out, yes, there "can" be an issue! Heavy metals are naturally present in our environment. We need the "good" heavy metals to thrive: iron, zinc, magnesium, copper, etc. But, we can 100% do without the toxic heavy metals: arsenic, cadmium, lead, mercury, etc. Too many toxic heavy metals can lead to a host of pretty awful issues: nervous system damage, cardiovascular issues, cancer, endocrine disruption, kidney damage, and so on. Our body is designed to excrete heavy metals through urine (and a little bit through sweat, hair, and breastmilk too)... but only so much. There's a limit. If you're overloaded, your body will store those heavy metals in your bones, blood, tissues, and organs. Similarly, if an animal is exposed to heavy metals via food, water, air, dust, or soil, those heavy metals accumulate in the bones. Maybe the farm's soil or air is contaminated from a nearby factory. Maybe the pipes for the water has lead solder connecting them. Maybe the feed a farm is buying was grown on contaminated soil or processed on contaminated equipment.  And, of course, a main purpose of bone broth is drawing out as much as possible from the bones. If there are heavy metals in bones, they will make their way into the broth. This is especially true when you use apple cider vinegar to draw everything out and make it thick and gelatinous (like our broth). And that led me to my second question --- Should I be concerned about every bone broth? Where is the fear coming from? Well... it seems it might be a little political. There was a study done in the UK in 2013 that scared a lot of people. It's titled "The Risk of Lead Contamination in Bone Broth Diets". This study found high levels of lead in organic chicken bone broth, which is quite concerning. And, in fact, this one study is still cited in articles written today! Let's dig a little deeper. Let's go farther than the short abstract. Here are the broths tested in the study and their test results for lead:  (9.5 parts per billion): Broth made from tap water plus skin and cartilage(7.01 parts per billion): Broth made from tap water plus bones(2.3 parts per billion): Broth made from tap water plus meat(0.89 parts per billion): Tap water alone cooked for the same amount of time as a control. But, they only used organic chicken from one farm. And, there's zero information about that farm, their practices, the feed, and the broth recipe. Did they use vinegar or wine in the broth? Was the chicken's water contaminated with lead? What was the quality of the feed and the soil? Were the chickens raised indoors or outdoors? So many unanswered questions! All we get is that it was one "organic chicken" that created a lead issue with broth. Another curious thing is that the broth with skin and cartilage contained more lead than the broth made with just bones. Bones are where lead is stored, so why wouldn't the broth made with bones only contain more lead? It's an odd result. Moreover, the abstract of the study specifically called out "bone broth diets" like GAPS and paleo. They even go so far as to write, "In view of the dangers of lead consumption to the human body, we recommend that doctors and nutritionists take the risk of lead contamination into consideration when advising patients about bone broth diets." That's quite curious. Why are they worried about these diets? Are the researchers anti healing through food? Who funded the research? Is it political? My opinion? This study is not comprehensive. It does not speak to all bone broths. But it does cover a potential issue if the water or animals are overloaded with heavy metals. And, as we know, our poor planet is becoming more and more contaminated with toxins like these toxic heavy metals šŸ˜¢ What I glean from this study is that we need more research. We need to stay vigilant and test from time to time. We don't need fear to spread and people to stop drinking broth from this one study.  Regardless of whether the fear was fabricated or legit, we tested our bone broth anyway. After all, it's always nice to validate that your food choices are as clean as you think. For Miller's, here were my concerns before testing: What if there's mercury in the fishmeal in our chicken feed?What if the soil that our animals live on is contaminated?What is the well water that the broth is made with is contaminated?What if the Celtic sea salt has lots of heavy metals? We actually tested twice. As it turns out, the first test results from March had too high a LOQ (limit of quantification). So, we sent new products in April for testing at a lower LOQ. The results are in! Our bone broth tested A+++ for arsenic, cadmium, lead, and mercury. You can find the actual Eurofins test results right here! For easy reference, here's a chart summarizing the results: You'll notice that, for every sample, the results are "<1.0 Ī¼g/kg" and "<4.0 Ī¼g/kg".  The "<" indicates the limit of quantification (LOQ), the lowest concentration that can be accurately tested using the test procedure in that sample type. So if a "<" result appears, it means that none of that metal was found in the sample above the specific reporting LOQ. Whether or not they were present below this LOQ is information that's not provided by the test. It's also important to note that a Ī¼g/kg is a part per billion (ppb). So, for 1 Ī¼g/kg, in every billion grams of that food, there would be one gram (or 0.0000001%) of that particular heavy metal. This small numbers matter when it comes to toxic heavy metals, since it doesn't take all that much for your body to become inundated and start experiencing issues or damage. These results are excellent. It means the broth definitely isn't overloaded with toxic heavy metals and are within safe levels.  Our amazing customers mentioned Mike Adams to me numerous times after we released the first set of broth results. Mike Adams is an outspoken consumer health advocate, investigative journalist, activist, and science lab director. It turns out Eurofins, the lab we used, is a lab that he recommends.  Moreover, our results land us in his highest rating when it comes to heavy metals! I think we're doing pretty great when it comes to providing clean, natural food. But, the results did make me pause. You might be thinking what I first thought -- "But wait, you got a positive reading for arsenic. Isn't that bad?"  Let's dive in -- Where would arsenic in food come from? First off, it's important to note that there are organic forms of arsenic as well as inorganic forms. Our body can handle the organic kind pretty well. But, the inorganic kind is carcinogenic. Our test results show the level of all arsenic, and it doesn't divide inorganic and organic. Second, it was a mystery to me how arsenic had a reading in the ground beef but not the beef bone broth. Thankfully, that has a pretty easy explanation. Whereas lead mainly accumulates in the bones, arsenic accumulates more in the organs and muscles. And, of course, meat is muscle. It was also quite perplexing how arsenic showed in our beef as well as our chicken. You see, our beef and chicken are grown on two separate farms (hours apart) and are processed at two separate processors (also hours apart). They're fed two completely separate diets, too! My only explanation is farmland in general or maybe even our environment in general.  Organic arsenic has always been naturally present in the soil and water. It's just there in small amounts. But, levels nowadays are likely higher due to overuse of products laden with inorganic arsenic over time. Starting in the 1940s, conventional farmers would include drugs filled with inorganic arsenic in the feed for pigs and chickens and turkeys to encourage fast growth and prevent disease. Ugh. This actually led to concerns about arsenic poisoning, and that that practice was banned recently, in 2016. It makes me think that all the agri-waste has contaminated our farmland a bit, perhaps in both the soil and water. And then of course there are synthetic pesticides and herbicides and fertilizers that may contain inorganic arsenic. And their use on conventional farms might runoff everywhere else.  Now, let's compare our results to food in general. Ours are extremely low. The data below is based on a few scientific studies: Arsenic: Rice contains anywhere from 90-450 ppb (that includes that rice cereal for babies, too). Meat and poultry in general typically contain 100-200 ppb.Cadmium: Spinach contains 1117-222 ppb. Rice contains 6-19 ppb. Meat and poultry in general contain about 10 ppb.Lead: Meat and poultry in general contain about 25 ppb.Mercury: The larger the fish, the more time it has to accumulate mercury. Swordfish and king mackerel can have about 1,000 ppb. Meat and poultry in general contain about 10-50 ppb.  Wow! Putting that into perspective, it looks like our broth and meat are quite clean and extremely low in toxic heavy metals! Are you satisfied with our heavy metal results? Do you think we should take further action? Should we test other products?  Do you worry about toxic metals (or other junk) in your food? Where have your fears stemmed from? I'd love to hear from you. You can comment below (no account required) or contact us šŸ˜Š ----- Sources The risk of lead contamination in bone broth dietsBone Broth and Lead Toxicity: Should You Be Concerned?Bone Broth and Lead Contamination: A Very Flawed Study in Medical HypothesesBone Broth, Collagen, and Toxic Metals: A Research ReviewInorganic arsenic toxicosis in a beef herd Consumer Wellness Center Labs Heavy Metal RatingsArsenic in Meat and Animal ProductsInorganic arsenic toxicosis in a beef herdArsenic in brown rice: do the benefits outweigh the risks?A Survey of the Levels of Selected Metals in U.S. Meat, Poultry, and Siluriformes Fish Samples Taken at Slaughter and Retail, 2017ā€“2022Arsenic in your foodDietary exposure to cadmium from six common foods in the United StatesMercury Content in Commercially Available Finfish in the United States Author links open overlay panel