Manganese is a trace mineral that supports bone formation, cartilage development, and metabolic processes in your dog's body. It is a key component of the antioxidant enzyme manganese superoxide dismutase (MnSOD), which protects cells from free radical damage inside the mitochondria — your dog's cellular power plants. Manganese also activates enzymes involved in protein, carbohydrate, and fat metabolism, and plays a role in blood clotting. For joint health, manganese supports the production of glycosaminoglycans, the building blocks of cartilage.
A quarter cup of cooked quinoa provides about 0.6mg of manganese — a medium dog needs approximately 1.2–5.0mg of manganese per day. Whole grains like oats and brown rice, quinoa, sweet potato, spinach, peas, and blueberries are all good sources. Most balanced commercial dog foods provide adequate manganese.
0.0% of daily nutrient intake
Manganese makes up 0.0% of your dog's total daily nutritional requirements by weight. That's a tiny amount — but it matters.
Manganese deficiency is rare in dogs on balanced diets. When it does occur, signs include poor bone growth and skeletal abnormalities in puppies, impaired reproduction, and reduced cartilage quality that may predispose joints to degeneration. Subtle deficiency might contribute to joint problems over time without obvious acute symptoms.
Manganese toxicity from dietary sources is very rare because absorption is tightly regulated. Extremely high intakes could theoretically affect iron absorption and nervous system function, but this is not a practical concern with whole-food diets.
| Life Stage | Size | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Adult | medium 10-25kg | 1.2 | 5 | mg | NRC recommended allowance. Manganese supports bone and cartilage health throughout life. |
| Senior | medium 10-25kg | 1.2 | 5 | mg | Senior dogs benefit from adequate manganese for antioxidant defense and ongoing bone and cartilage maintenance. |
Source: NRC 2006
