ardam, formerly CDK9 Raw, has fed lamb hearts to dogs across Sydney and beyond for years, and it remains one of our favourite organ meats to recommend. Lamb heart is a dense, muscular organ meat that sits between "meat" and "offal" on a raw feeding plate, and it brings a concentrated dose of protein, iron, B vitamins and taurine to a dog's bowl. If you feed raw or are considering the switch, lamb hearts are worth understanding on their own terms rather than lumping them in with liver or kidney.
This guide covers what lamb heart offers nutritionally, how it may support a dog's everyday wellbeing, and how to introduce it safely alongside a balanced diet. As with any organ meat, moderation and variety matter more than any single ingredient.
What nutrients are in lamb heart for dogs?
Lamb heart is technically a muscle, not a secreted organ like liver, so it behaves more like a lean protein source with an organ-meat nutrient bonus. It is naturally rich in:
- High-quality protein for muscle maintenance and repair
- Taurine, an amino acid important for heart and eye function in dogs
- B vitamins, particularly B12, which supports red blood cell production
- Iron and zinc for healthy blood and immune function
- CoQ10, a naturally occurring compound found in high concentrations in heart muscle
Because it is nutrient-dense without being as rich as liver, lamb heart is often easier to introduce in larger quantities than secreting organs, which are usually capped at around 5-10% of total diet.
Can lamb heart support my dog's energy levels?
Many raw feeders notice their dogs seem more energetic and alert after lamb heart is introduced regularly. The B12 content plays a role here, since B12 is involved in how the body converts food into usable energy and supports the production of healthy red blood cells that carry oxygen around the body. A diet that includes appropriate amounts of B12-rich organ meat may help maintain normal energy levels, particularly in active working dogs or growing puppies with higher metabolic demands.
Does lamb heart support brain and nervous system health?
Lamb heart contains choline, a nutrient involved in maintaining healthy cell membranes and supporting normal neurotransmitter function. A varied raw diet that includes choline-rich organ meats may help support normal cognitive function and nervous system health over a dog's life, particularly as dogs age. This is not a substitute for veterinary care of any neurological condition, but it is a sensible nutritional building block.
How much lamb heart should I feed my dog?
Because lamb heart is closer to a muscle meat than a secreting organ, it can generally make up a reasonably generous portion of the meat component of a balanced raw diet, though it should not fully replace the variety a dog needs from other proteins. A good starting approach is to introduce it gradually, alongside other meats such as beef, chicken or duck, and watch your dog's stool and appetite for a few days as you would with any new ingredient. Every dog is an individual, so working with the ardam meal planner can help calculate appropriate portions based on your dog's weight and activity level.
Is lamb heart safe for all dogs?
Lamb heart is generally well tolerated, but dogs with existing kidney concerns or on a therapeutic diet prescribed by a vet should only have organ meats added under veterinary guidance, since organ meats are naturally higher in phosphorus and purines than muscle meat. Puppies, adult dogs and seniors can generally enjoy lamb heart as part of a varied raw diet, but always introduce any new protein slowly.
At ardam, our raw meals are built around whole ingredients like lamb heart alongside other proteins including beef, duck, chicken and fish, so dogs get variety without owners needing to source and balance every cut themselves. Explore our lamb, beef and kangaroo range or browse our raw meaty bones and offal collection to see how lamb heart fits into a complete meal plan.
How does lamb heart compare to other organ meats?
Liver is the most nutrient-dense organ and is typically fed in smaller amounts due to its very high vitamin A content, while kidney offers a different mineral profile again. Lamb heart sits in a useful middle ground: nutrient-rich but forgiving in portion size, which is part of why so many Australian raw feeders keep it on regular rotation. If you are new to organ meats generally, our guide on the benefits of offal for dogs is a good companion read alongside this one.
If you are just starting to explore raw feeding, our sample pack is an easy, low-commitment way to see how your dog responds to a range of proteins, including lamb heart, before committing to a full subscription.
How should I introduce lamb heart into my dog's diet?
As with any new protein, the safest approach is a slow introduction. Start with a small piece of lamb heart mixed into your dog's regular meal, and monitor for any signs of digestive upset such as loose stool or vomiting over the following 24 to 48 hours. If your dog tolerates it well, you can gradually increase the portion and frequency over one to two weeks. Dogs transitioning from a long-term kibble diet may need a slightly longer adjustment period as their gut microbiome adapts to a broader range of whole foods.
It also helps to keep the rest of the diet consistent while introducing a new protein, so if something does not agree with your dog, it is easier to identify the cause. Feeding lamb heart alongside familiar proteins your dog already tolerates well, rather than swapping everything at once, tends to make the transition smoother for both dog and owner.
What should I look for when buying lamb heart for my dog?
Not all lamb heart is created equal. Quality matters just as much as quantity when it comes to raw feeding. Look for:
- Fresh or properly frozen lamb heart from a supplier with clear sourcing and handling standards
- No added preservatives, fillers or artificial colours
- Appropriate portion sizing for your dog's weight, ideally pre-portioned to reduce guesswork
- Cold chain integrity from supplier to your freezer, since organ meats spoil faster than muscle cuts if mishandled
Buying from a dedicated raw dog food supplier rather than repurposing supermarket offcuts intended for human consumption is generally the safer and more consistent option, since purpose-built raw diets are formulated with a dog's full nutritional needs in mind rather than a single ingredient in isolation.
Does lamb heart fit into a complete and balanced raw diet?
Lamb heart on its own is not a complete diet, and no single ingredient ever is. It works best as one component within a broader rotation of muscle meat, organ meat, edible bone and a small amount of plant matter, all proportioned to meet a dog's daily nutritional requirements. This is exactly the philosophy behind ardam's meal plans: rather than asking owners to source, weigh and balance individual cuts like lamb heart, beef mince, chicken frames and fish themselves, we build the variety into every meal so dogs across Sydney and the rest of Australia get complete nutrition without the guesswork.
If you already feed a raw diet and want to add more variety, lamb heart is a low-risk, high-reward ingredient to rotate in. If you are moving away from kibble for the first time, our guide on switching to raw and what to expect walks through the transition process step by step.
FAQ: Lamb hearts for dogs
Can dogs eat lamb heart raw?
Yes, lamb heart is commonly fed raw as part of a balanced diet. Source it from a reputable raw pet food supplier to ensure proper handling and freshness.
How often can I feed my dog lamb heart?
Lamb heart can be fed several times a week as part of a rotational raw diet. It works well mixed with other proteins rather than as the sole meat source.
Is lamb heart good for puppies?
Lamb heart can be a useful protein and nutrient source for growing puppies when introduced gradually and portioned appropriately for their size and age.
Does lamb heart help with a dog's coat?
The omega-3 content and overall protein quality in lamb heart may help support healthy skin and a glossy coat as part of an overall balanced diet.
What is the difference between lamb heart and lamb liver?
Lamb heart is a muscle meat with a moderate nutrient profile, while lamb liver is a secreting organ that is far more concentrated in vitamin A and should be fed in smaller amounts.
Where can I buy quality lamb hearts for my dog in Australia?
ardam supplies lamb heart as part of our raw meal ranges, delivered fresh to homes across Sydney and Australia. Check our full range to get started.
For general guidance on organ meat ratios and canine nutrition standards, the Australian Veterinary Association offers useful background reading.
Author: the ardam team.
