Reviewed by RawFeeding101 Team: Dewan Bayney, NAVC Pet Nutrition Coach
Based on NRC Dog Nutrition Guidelines (2024)
Quick Answer
No, kidney is not a 1:1 replacement for liver in a dog’s raw diet. While both are secreting organs that supply Vitamin A and B vitamins, liver provides far more preformed Vitamin A and copper, two nutrients essential for balance. Using kidney short-term is fine, but long-term substitution can cause nutrient deficiencies.
Deep Dive: Liver vs. Kidney Nutrition (NRC 2024, USDA FDC Data)
Here’s how beef liver and beef kidney compare per 100 g edible portion:
| Nutrient | Beef Liver (NDB ID: 13325) | Beef Kidney (NDB ID: 13323) |
| Vitamin A | ~4970 µg | ~419 µg |
| Copper | ~9.76 mg | ~0.4 mg |
| Iron | ~4.9 mg | ~4.6 mg |
| B Vitamins | High (B12, folate) | Moderate (B2, B12) |
Key insights:
- Liver supplies ~5x more Vitamin A than kidney.
- Copper is nearly 30x higher in liver.
- Both provide iron, but liver edges out.
👉 According to NRC 2024, dogs require 379 µg Vitamin A and 1.5 mg copper per 1000 kcal. Without liver, these minimums are nearly impossible to meet.
Practical Guidance for Raw Feeders
If you run out of liver, here’s how to adjust:
- ✅ Short-term: Use kidney for a few meals – your dog won’t crash overnight.
- ❌ Long-term: Do not eliminate liver. Copper and Vitamin A deficiencies can appear.
- ✅ Variety approach: Feed both liver and kidney to diversify nutrients.
- ✅ Check balance: Use the [Raw Feeding 101 NRC Calculator] to confirm you’re meeting RA/SUL targets.
For those following ratio-based models like PMR or 80/10/10, this is one of the biggest limitations, ratios don’t guarantee nutrients.
That’s why Raw Feeding 101 teaches nutrient-based balancing.
Why It Matters
Liver is one of the most nutrient-dense foods available. Skipping it or swapping it with kidney long-term risks:
- Copper deficiency → anemia, coat loss, weak connective tissue
- Vitamin A deficiency → skin issues, poor vision, immune weakness
- Overfeeding risk → too much liver can lead to Vitamin A toxicity
The solution isn’t avoiding liver-it’s balancing it.
Stop guessing, start verifying.
Check your meal plan with the [Raw Feeding 101 Nutrient Calculator], or join our Raw Feeding Bootcamp to learn step-by-step how to build NRC-compliant raw diets without confusion.
👉 Remember: AI guesses, Raw Feeding 101 verifies
FAQs
Q1. Can I replace beef liver with kidney in my dog’s raw diet?
No. Liver is essential for Vitamin A and copper. Kidney can be a short-term substitute but not a permanent replacement.
Q2. Why is liver considered more important than kidney?
Liver provides 5x the Vitamin A and nearly 30x the copper compared to kidney. Both are useful, but liver is irreplaceable.
Q3. What happens if my dog doesn’t get liver?
Long-term exclusion of liver may lead to copper and Vitamin A deficiencies, causing anemia, poor coat health, and weakened immunity.
Q4. Is feeding too much liver dangerous for dogs?
Yes. Excess liver can cause Vitamin A toxicity. Keep it balanced within NRC safe upper limits.
Q5. How do I know if my raw diet is balanced?
Use the [Raw Feeding 101 NRC Calculator] to check if your dog’s meal plan meets nutrient requirements for Vitamin A, copper, and more.



