About the Flemish Giant
The Flemish Giant is one of the largest rabbit breeds — the size of a small dog — with correspondingly large hay and pellet needs, and joint strain if it becomes overweight. A typical adult weighs about 5–10 kg.
How much should a Flemish Giant eat?
Calorie needs use the veterinary formula 70 × weight(kg)0.75 (the Resting Energy Requirement), multiplied by a lifestyle factor of ×1.5 for a typical rabbit at the life stage shown. Enter your own animal's details in the calculator for an exact figure.
| Body weight | Daily calories |
|---|---|
| 5 kg | 351 kcal |
| 5.714 kg | 388 kcal |
| 6.429 kg | 424 kcal |
| 7.143 kg | 459 kcal |
| 7.857 kg | 493 kcal |
| 8.571 kg | 526 kcal |
| 9.286 kg | 559 kcal |
| 10 kg | 590 kcal |
What to feed
A rabbit's diet should be roughly 80-90% grass hay (timothy, orchard, meadow), a daily portion of leafy greens, and only a small measured amount of pellets. Muesli-style mixes should be avoided — rabbits selectively eat the sugary bits and leave the fibre, causing dental disease and gut stasis.
Hay is offered free-choice, topped up throughout the day. Pellets and greens are given in one or two measured servings. A rabbit that stops eating for 12 hours is a medical emergency (gut stasis).
Frequently asked questions
How much should I feed a Flemish Giant?
A large amount of hay (their main diet) plus roughly 120-180 g of pellets a day for a 7 kg giant, scaled to body condition. Growing giants need extra to fuel their long development.
How many pellets should I feed my rabbit?
A rough guide is 25 g of quality pellets per kg of body weight per day — so about 50 g for a 2 kg rabbit — alongside unlimited hay. Growing rabbits under six months can have more, plus alfalfa hay.