Biotin is particularly important for maintaining your rabbit's dense, healthy fur coat and strong nails. It plays a key role in metabolizing fatty acids and amino acids — the building blocks of healthy skin and coat. Rabbits produce biotin through cecal bacterial fermentation, making cecotrope consumption the primary delivery pathway. A rabbit with a consistently dull, thinning coat despite an otherwise good diet may benefit from increased access to biotin-rich foods, though this is uncommon when cecotrophy is functioning normally.
A few sunflower seeds (about 3 to 5 seeds, as a very rare treat) provide roughly 1 to 2mcg of biotin — your adult rabbit needs approximately 0.1 to 0.2mg of biotin per kilogram of diet, comfortably supplied through cecotropes and the natural biotin content in timothy hay and fresh greens.
0.0% of daily nutrient intake
Vitamin B7 (Biotin) makes up 0.0% of your domestic rabbit's total daily nutritional requirements by weight. That's a tiny amount — but it matters.
Thinning or rough coat, flaky or crusty skin, brittle nails, and poor wound healing. Deficiency is most likely if cecotrope consumption is disrupted by obesity, arthritis, dental pain, or an Elizabethan collar.
Biotin is water-soluble and excess is excreted without issue. Toxicity from food sources is not a concern.
| Life Stage | Size | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Adult | — | 0 | 0.02 | mg | Per kilogram of diet. Primarily supplied through cecotrope consumption. |
Source: NRC 1977, general veterinary consensus
