Fat-soluble vitamin minimums for dogs and cats
Fat-soluble vitamins (A, D, E) carry both minimum and, often, maximum levels because excess is toxic. The three standards below are expressed in IU/kg dry matter (IU/kg DM) so they sit on one comparable basis; NIAS raw values (per 100 g DM) are converted to IU/kg DM by ×10 and labelled. Every figure is verbatim from the cited topic.
Dog — adult maintenance (IU/kg DM)
| Vitamin | AAFCO 2026 | FEDIAF 2025 | NIAS 2024 |
| --- | --- | --- | --- |
| Vitamin A (min / max) | 5000 / 250000 | 606 / 40000 | 5000 / 400000 |
| Vitamin D (min / max) | 500 / 3000 | 55.2 / 320 | 500 / 3200 |
| Vitamin E (min) | 50 | 3.6 | 36 |
AAFCO sets no vitamin E maximum; FEDIAF sets none for adult dog either.
Cat — adult maintenance (IU/kg DM)
| Vitamin | AAFCO 2026 | FEDIAF 2025 | NIAS 2024 |
| --- | --- | --- | --- |
| Vitamin A (min / max) | 3332 / 333300 | 333 / 40000 | 3330 / 400000 |
| Vitamin D (min / max) | 280 / 30080 | 25.0 / 3000 | 250 / 30080 |
| Vitamin E (min) | 40 | 3.8 | 38 |
The headline contrasts
- Vitamin D ceilings diverge sharply. Cats tolerate a far higher vitamin D maximum (AAFCO 30080, NIAS 30080 IU/kg DM) than FEDIAF's 3000 IU/kg DM ceiling. AAFCO's dog vitamin D max (3000) and NIAS (3200) are also far above FEDIAF's 320.
- FEDIAF's absolute levels look low because its adult-dog values use the 110 kcal/kg BW^0.67 column and cat values the 100 kcal/kg BW^0.67 column — a different normalization than AAFCO/NIAS per-kg-DM.
- Vitamin E has no maximum under AAFCO or NIAS for either species.
Sources
life_stage_nutrient_matrix_vitamins— AAFCO 2026 / FEDIAF 2025 / NIAS 2024 fat-soluble vitamin A/D/E min (and max) for adult dog and cat, in IU/kg DM; NIAS ×10 conversion noted; FEDIAF column basis explained.