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What is a Flemish giant rabbit?
The Flemish giant is a large, upright-eared domestic rabbit bred in Flanders, the Dutch-speaking north of Belgium, around the city of Ghent. That is why some people call it a Belgian giant. Dr Elliott Garber's breed profile on Creatures dates the earliest reliable records to about 1860, with the first written standard in 1893. The breed reached England and the United States in the late 1800s, where it was used to add size to meat rabbits. Today most Flemish giants are pets and show rabbits.
It is one of three giants you will meet in the UK, alongside the Continental giant and the British giant. They look similar and are often crossed, so plenty of rabbits sold as "Flemish" are really giant crosses. Our rabbit breeds guide shows how the giants compare with medium and small breeds.
Flemish giant size: how big do they get?
A fully grown Flemish giant usually weighs 6.8 to 9 kg (15 to 20 lb). The American Rabbit Breeders Association standard, as quoted on Creatures, sets minimum show weights of 5.9 kg (13 lb) for a senior buck and 6.4 kg (14 lb) for a senior doe, and there is no maximum. The Rabbit Welfare Association & Fund (RWAF) describes giant breeds in general as 5 to 10 kg (11 to 22 lb) or more.
Length matters more than weight when you plan a home. A relaxed adult stretched out measures about 75 cm (2.5 ft), and the RWAF notes giants can be over 1.2 m (4 ft) when they stretch up on their back legs. Kits grow fast and keep growing for longer than small breeds, so a 12-week-old Flemish already needs adult-sized planning.
| Breed | Typical adult weight | Ears |
|---|---|---|
| Flemish giant | 6.8 to 9 kg (15 to 20 lb) | Upright |
| Continental giant | Giant breed, over 5 kg (11 lb) | Upright |
| French lop | Giant breed, over 5 kg (11 lb) | Lop |
Flemish giant colours: black, blue, fawn, sandy and white
The US standard recognises seven solid colours: black, blue, fawn, light grey, sandy, steel grey and white. Broken (patched) colours are not accepted for showing, though they turn up in pet and cross-bred rabbits and make perfectly good pets.
- Black and blue: a deep, even coat. A "blue Flemish" is a soft slate grey.
- Fawn and sandy: warm golden and reddish-brown shades, often with a paler belly.
- Light grey and steel grey: wild-type ticked coats.
- White: an all-white coat, which shows stains from a dirty floor quickly, so it needs a clean, dry home.
Colour changes nothing about care, size or temperament. Names like "German Flemish" or "lop-eared Flemish" are seller labels rather than recognised types: the purebred is upright-eared, so a lop is a cross. If size matters to you, ask to see both parents.
How much space does a Flemish giant need?
A Flemish giant needs enough room to make at least three consecutive hops in any direction, which the RWAF says could mean 3.7 m (12 ft) in total, plus height to stand fully upright. The Scottish Government's welfare guidance gives 3 × 2 m (10 × 6 ft) and 1 m (3 ft) high as the minimum for two average-sized rabbits, and says giants need more. A pet shop hutch is rarely big enough even for one giant.
The setups that work are a large shed with a run attached, an aviary, or a house rabbit arrangement with a rabbit-proofed room or a big pen. The RWAF puts suitable housing for giants at upwards of £300 (about $400), as of November 2026. Our rabbit shed guide covers ventilation, mesh and runs, and the rabbit hutch size guide explains why a hutch alone fails.
- Measure your rabbit. Stretched-out length times four is the RWAF's rough guide to the shortest side of the space a giant needs.
- Pick the shelter. A shed, playhouse or indoor room, tall enough for a giant to stand up without its ears touching the roof.
- Join a run. A secure run open all day and night, with a roof, a floor or buried mesh, and welded mesh rather than chicken wire.
- Lay soft flooring. Thick, soft bedding or vet bed over lino, so the heavy back feet never sit on bare wood, wire or tiles.
- Size up everything inside. Doorways, hides, tunnels and litter trays all need to fit a rabbit twice the usual size.
Caring for a Flemish giant rabbit: diet and daily care
Feed a Flemish giant the same diet as any rabbit, just more of it: unlimited hay or grass, a large daily pile of leafy greens and fresh water, with a measured portion of pellets. The RWAF suggests adults need just over 15 g of pellets per kg of body weight a day, so about 105 g (3.7 oz) for a 7 kg (15 lb) rabbit. Growing youngsters need more. Keep a giant slim, because extra weight strains joints and makes cleaning its own bottom harder.
Hay goes fast. Many giant owners buy it by the bale. Our rabbit diet guide sets out the full balance, and what rabbits can eat lists safe greens.
- Unlimited fresh hay, topped up morning and evening
- A big pile of mixed leafy greens every day
- Pellets weighed out, not free-fed
- Fresh water in a heavy bowl, changed daily
- Back end checked at least twice a day in warm weather
- Feet and hocks checked daily
- Weight checked monthly
A giant often outgrows small-pet gear. A large dog crate makes a good carrier, a cement mixing tub or large storage box makes a good litter tray, and a heavy ceramic dog bowl stops water being tipped over.
Handling a Flemish giant
Handle a giant only when you need to, for health checks, bottom checks or nail clipping. The RWAF advises sitting on the floor so the rabbit never has far to fall, and always supporting its spine and back end. A frightened kick from a 7 kg rabbit can scratch you badly, and a twist or fall can break its back or hind legs. Most Flemish giants are happiest with you lying on the floor beside them.
Never lift a giant rabbit by the scruff or let its back legs dangle. Spinal and hind-leg fractures from bad handling can be fatal. If you cannot support its full weight against your body, do the check on the floor instead.
Flemish giant health problems to watch for
Flemish giants share every normal rabbit health risk, such as dental disease and gut stasis, but their size adds a few of their own. These are the ones the RWAF and vet-written guides flag.
| Problem | What to look for | What helps |
|---|---|---|
| Sore hocks | Bald, red or scabbed patches under the back feet | Thick soft flooring, daily foot checks, vet if broken skin |
| Arthritis and spine changes | Slowing down, shuffling, a dirty or wet bottom | Vet visit soon; often managed with medication |
| Flystrike | Maggots or a wet, smelly back end | Keep slim, check twice daily, vet-advised fly prevention |
| Heart disease | Tiring quickly, fast breathing, collapse | Regular vet checks; early cases can be managed |
| Obesity | Can't reach its own bottom, fat rolls | Weighed pellets, more hay and space |
The RWAF notes that does with big dewlaps (the fold of skin under the chin) struggle to groom their back end, which raises the flystrike risk. It also says a type of heart disease called dilated cardiomyopathy is more common in giant breeds and can cause sudden death, so ask your vet to listen to the heart at every check. Keep up vaccinations for myxomatosis and both strains of RHD. See our rabbit health guide for signs of illness.
How long do Flemish giant rabbits live?
Expect about 5 to 8 years. Dr Garber gives 5 to 8 years on Creatures, while the RWAF says giants typically live 4 to 6 years, with some living longer. Both agree it is shorter than the 8 to 12 years of small breeds. We would plan for 5 to 8 and treat anything beyond that as a bonus. Our rabbit lifespan guide covers what helps all rabbits live longer.
Flemish giant price and cost: what to budget
The rabbit is the cheap part. Creatures reports pet-quality kits often selling for well under $100 in the US, with pedigree show stock commonly a few hundred dollars. The real costs are housing, from about £300 (about $400) for a suitable setup according to the RWAF, plus far more hay, bedding and litter than a small rabbit, and higher vet bills because doses and anaesthetics scale with weight. All figures are as of November 2026. Our rabbit cost guide breaks down the monthly spend.
Flemish giant rabbits for adoption, and buying one
Start with rescues. Giant rabbits and giant crosses are regularly handed in to rescues once owners realise how big they get, and a rescue rabbit usually comes neutered, vaccinated and already bonded or ready to bond. The RSPCA, Blue Cross and Woodgreen all rehome rabbits, as do many small specialist rabbit rescues. Our guide to where to get a rabbit lists what to ask.
If you buy from a breeder, ask to see both parents, ask the adult weights, and ask whether there is any history of heart problems or sore hocks in the line. A good breeder will keep a kit until at least eight weeks, will tell you it needs a companion, and will take it back if things go wrong.
Flemish giant rabbit questions
How big do Flemish giant rabbits get?
Most adults weigh 6.8 to 9 kg (15 to 20 lb), and the American breed standard sets minimums of 5.9 kg (13 lb) for bucks and 6.4 kg (14 lb) for does, with no upper limit. Stretched out, a relaxed adult measures about 75 cm (2.5 ft) or more, and giants can top 1.2 m (4 ft) when standing tall.
How long do Flemish giant rabbits live?
Usually about 5 to 8 years, according to vet-written breed guides, while the Rabbit Welfare Association & Fund puts giant breeds at 4 to 6 years, with some living longer. That is shorter than the 8 to 12 years of smaller rabbits. Good weight control, soft flooring and early vet checks for heart and joint problems give yours the best chance.
Is a Flemish giant the same as a Belgian giant?
Yes. The breed comes from Flanders in Belgium, around the city of Ghent, so you will see it called a Belgian giant, Flemish giant or just a Flemish rabbit. It is a different breed from the Continental giant and the British giant, though all three are large and are often confused, and crosses between them are common.
Are Flemish giants good for first-time owners?
They can be, if you have the space. Well-handled Flemish giants are usually calm and easy-going, and their size makes them less nervous than many small breeds. The catch is everything else being bigger: housing, food, litter trays, carriers and vet bills. Plan for those before you decide, not after.
Can you get a lop-eared Flemish giant?
Not as a purebred. The breed standard is an upright-eared rabbit, so a lop-eared giant is most likely a cross with a lop breed or a French lop, which is itself a large breed. That is no reason to pass on a rabbit, but it does mean adult size is harder to predict, so plan for the biggest parent.
Do Flemish giant rabbits need to live in pairs?
Yes. Like every rabbit, a Flemish giant needs at least one rabbit companion, ideally a neutered pair. A second giant is easiest, because a much smaller rabbit can be hurt in play. Bonding works the same way as for any breed: slowly, on neutral ground, after both have been neutered.
