
Source: Wikimedia Commons
Oryctolagus cuniculus
One of the world's largest rabbit breeds, weighing 6kg+. Known as a gentle giant with a calm, friendly nature.
The Flemish Giant is one of the oldest and largest domestic rabbit breeds, originating in the Flanders region of Belgium. Adults typically measure 60–75 cm and weigh 6–10 kg, with exceptional individuals exceeding 13 kg. Historically bred for meat and fur production since the 16th century, they are now kept primarily as companion animals valued for their imposing size and calm disposition. Often called the 'Gentle Giant,' Flemish Giants are renowned for their docile, patient temperament and tendency to bond closely with their owners despite their great size. Their housing requirements are substantial: a spacious, structurally strong enclosure is essential, along with unlimited high-quality hay and increased portions of pellets to meet nutritional demands. Due to their weight, they are susceptible to sore hocks and spinal injuries if dropped. Common health concerns include pododermatitis, vertebral spondylosis, obesity, and GI disorders. Lifespan is 5–8 years.
Origin
Flanders, Belgium
Lifespan
5-8 years
Size
60-75cm / 6-10kg
Temperature
18〜26℃
Humidity
40〜60%
Timothy hay (staple), pellets, vegetables (large breed portions)
Sources: RWAF Rabbit companionship
Breeding season: Year-round; induced ovulator
Breeding notes
As a giant breed, sexual maturity occurs late; breeding is generally advised from 9–12 months onward. Does should ideally deliver their first litter before 12 months of age to reduce the risk of pubic symphysis fusion causing dystocia. Litter size estimates vary by source: PMC groups 'Dutch or Flemish' at 4–5 kits, while PetMD reports 5–12 specifically for Flemish Giants.
Breeding requires planning, proper husbandry, and responsibility. These figures are general guidelines.
Sources: PMC — Biology and Diseases of Rabbits (Fox & Marini) / MSD Veterinary Manual — Breeding and Reproduction of Rabbits / PetMD — Flemish Giant Rabbit
ARBA 公認 Flemish Giant のカラー variety(7色)。
Sources: ARBA Recognized Breeds and Varieties
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Oryctolagus cuniculus (Linnaeus, 1758)
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices / 環境省 特定外来生物一覧
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
Large breed requires spacious cage and ample exercise area
Calm and affectionate. May follow owner around like a dog
Larger body means more hay and pellets. Higher food costs
Joint stress is a concern. Non-slip flooring and sore hock prevention essential
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Flemish Giant Rabbit is 18〜26℃. Recommended humidity is 40〜60%. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Flemish Giant Rabbit is 5-8 years. With proper care and nutrition, they can live a long and healthy life.
Flemish Giant Rabbit typically reaches 60-75cm / 6-10kg as an adult. Size may vary depending on care conditions and individual genetics.
Flemish Giant Rabbit feeds on: Timothy hay (staple), pellets, vegetables (large breed portions). Aim for a balanced diet with appropriate feeding frequency.
The price of Flemish Giant Rabbit varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 30, 2026