29/08/2026
🥩🐾 LET’S TALK ORGAN MEAT IN FRESH FEEDING 🐶🍽️
If you feed your dog a fresh or raw diet, you have probably heard that organ meat is essential.
There is truth in that, but there is also a lot of confusion about what actually counts as an organ nutritionally, how much should be fed, and whether every organ from a prey animal needs to end up in the bowl.
Let’s unpack it.
🧠 WHAT DO WE MEAN BY “ORGAN MEAT”?
In fresh feeding, the term “organ meat” is often used very broadly. Anatomically, many tissues are organs. Nutritionally, however, they are not interchangeable.
When we talk about the nutrient-dense secreting organs used in fresh feeding, we are generally referring to tissues such as:
🥩 Liver
🥩 Kidney
🥩 Spleen
🥩 Pancreas
🥩 Thymus
🥩 Brain
These tissues have specialised physiological functions and contain different concentrations of vitamins, minerals and other nutrients.
And that difference matters.
❤️ WHAT ABOUT HEART?
Heart is an organ anatomically because it is a specialised body structure.
Nutritionally, however, it is generally treated as muscle meat.
Heart is predominantly cardiac muscle and is an excellent food for dogs. It provides high-quality protein and nutrients including taurine, iron, zinc, selenium and B vitamins.
So if you are following a traditional fresh/raw feeding framework, heart belongs in your muscle-meat component rather than your secreting-organ allowance.
The same principle applies to muscular organs such as gizzard.
🧬 WHY IS LIVER SO IMPORTANT?
Liver is arguably the most important secreting organ in a fresh diet because of its exceptional nutrient density.
It provides highly bioavailable sources of:
🥩 Preformed vitamin A
🥩 Vitamin B12
🥩 Riboflavin and other B vitamins
🥩 Copper
🥩 Iron
🥩 Folate
Vitamin A is required for normal vision, immune function, reproduction, cell differentiation and many other physiological processes.
But this is also why liver needs to be respected.
More is not better.
Excessive liver feeding can provide excessive amounts of vitamin A and other nutrients. Organ meat should therefore be included deliberately rather than simply added in unlimited quantities because it is considered “healthy”.
🫘 WHAT DO THE OTHER ORGANS CONTRIBUTE?
Kidney, spleen, pancreas, thymus and other secreting tissues have their own nutritional profiles.
Kidney is a useful source of B vitamins and selenium.
Spleen is particularly rich in iron.
Pancreas contributes protein, fat and micronutrients and provides another type of secreting tissue.
Thymus is another nutrient-dense tissue that can be used as part of dietary variety.
This is one reason I prefer a variety of secreting organs rather than relying exclusively on liver.
However, there is an important point here:
There is no scientifically established requirement stating that a dog must consume a specific percentage of kidney, spleen, pancreas or thymus. If you don't have a wide variety of secreting organs available that's alright.
The National Research Council establishes nutrient requirements for dogs. It does not prescribe a recipe containing particular percentages of individual organs.
📊 SO HOW MUCH ORGAN MEAT SHOULD WE FEED?
A commonly used fresh/raw feeding framework is approximately:
🥩 5% liver
🥩 5% other secreting organs (or another 5% liver)
🥩 80% muscle meat and other appropriate animal tissues
🦴 10% edible bone
This is a useful framework for understanding the different components of a fresh diet.
🌿 WHAT ABOUT OVARIES AND TE**ES?
This is where I think we need to be particularly careful about assuming that “natural” automatically means “necessary”.
Ovaries and te**es are organs anatomically and can certainly be consumed by dogs.
They contain protein, fat, micronutrients and biologically active compounds, including reproductive hormones.
But there is currently no established canine nutritional requirement for feeding ovaries or te**es, and there is no evidence-based percentage that needs to be included in a balanced canine diet.
Some whole-prey feeding approaches recommend them because they are present in an intact animal.
But the fact that a wild canid may consume reproductive organs when eating an entire carcass does not demonstrate that domestic dogs require those tissues nutritionally.
Personally, I don't consider ovaries or te**es essential components of a fresh diet.
I would rather use the secreting-organ allowance for tissues with a clear nutritional rationale, such as liver, kidney and spleen, while using other organs for variety where appropriate.
This is an important distinction:
🐾 Anatomically an organ does not automatically mean nutritionally essential.
🐾 A food can be nutritious without being required.
🐾 Variety can be beneficial without every anatomical part being necessary.
🍽️ HOW OFTEN SHOULD ORGANS BE FED?
You do not need to feed a large quantity of organ meat at every meal.
What matters is the overall amount and nutrient contribution across the diet.
If you are working with the traditional 5% liver + 5% other secreting organs (or 10% liver) framework, those amounts can be distributed throughout the week rather than trying to make every individual meal perfectly identical.
For example, small amounts can be incorporated into several meals.
This can also be easier for dogs to tolerate, particularly when introducing organ meat for the first time.
The important consideration is the total diet over time.
⚠️ WHY BALANCE MATTERS
One of the biggest misconceptions about fresh feeding is that if a diet contains meat, bone and organs, it must automatically be nutritionally complete.
Unfortunately, it doesn't work that way.
Dogs have specific requirements for amino acids, fatty acids, vitamins and minerals.
Some nutrients can be deficient.
Others can become excessive.
Vitamin A from liver is one example, but calcium, copper, iodine, selenium and other nutrients also need to be considered.
This is particularly important for puppies, pregnant and lactating dogs and dogs with specific nutritional or medical requirements.
A diet can look beautifully “natural” in the bowl and still be nutritionally unbalanced.
🧪 SCIENCE OVER FORMULA
This is why I believe good fresh feeding requires more than memorising an 80/10/5/5 ratio.
Understand what each ingredient contributes.
Understand what your dog requires.
Use variety thoughtfully.
And, most importantly, consider the nutrient profile of the complete diet rather than assuming that a particular collection of ingredients automatically equals nutritional completeness.
❤️ MY TAKE-HOME MESSAGE
✔️ Liver is an exceptionally nutrient-dense food and an important source of preformed vitamin A, B12, copper, iron and other nutrients.
✔️ Kidney, spleen, pancreas and other secreting organs provide different nutrient profiles and can contribute valuable dietary variety.
✔️ Heart is anatomically an organ but is nutritionally treated as muscle meat.
✔️ A commonly used fresh/raw framework is approximately 5% liver and 5% other secreting organs.
✔️ There is no scientifically established percentage for each individual secreting organ.
✔️ Ovaries and te**es are not recognised as nutritionally essential components of the canine diet.
✔️ Organ meat does not need to be fed in large quantities at every meal. The overall dietary intake across time is what matters.
✔️ More organ meat is not necessarily healthier.
✔️ A “natural” ingredient list does not automatically make a diet nutritionally complete.
Fresh feeding gives us an amazing opportunity to provide dogs with a wide variety of whole foods.
But the goal isn't simply to recreate every part of an animal in the food bowl.
The goal is to provide the nutrients the dog actually needs, in appropriate amounts, from appropriate foods.
That is where fresh feeding becomes science-based nutrition rather than simply following a recipe. 🧪🐾
Donna Williams,
Emerald Park Border Collies.
www.emeraldparkbc.com
“My mission is to make life better for at least one dog today!”