How Big Do Rabbits Get? [The Ultimate Size Guide]

Thinking of hopping into the world of rabbit ownership?

Then ‘How Big Do Rabbits Get?’ isn’t just a casual wonder – it’s an essential question for if you are a potential bunny parent.

From the pint-sized Netherland Dwarf to the majestic Flemish Giant, rabbit size can be vast and varied.

If you’re eyeing a furry little ‘kitten’ (yes, that’s what baby rabbits are called!) and pondering its growth trajectory, this guide is tailored for you…

How Big Do Rabbits Get?

Rabbits vary in size: Dwarf breeds measure 8-12 inches and weigh 2-3 pounds; medium breeds, like the Dutch, reach 14-16 inches, 4-6 pounds; large breeds, like Flemish Giants, grow to 26-30 inches, weighing 12-20 pounds.

Factors That Influence A Rabbits Size


The primary determinant of a rabbit’s size is its genetic makeup.

Breeds have been selectively bred over generations to emphasize certain size characteristics.

For instance, the Netherland Dwarf has been bred for its small size, while the Flemish Giant is bred for its impressive bulk.

Diet & Nutrition

Just like in many animals, the diet a rabbit receives from birth plays a crucial role in its growth.

A balanced diet rich in hay, vegetables, pellets, and water ensures optimal growth.

Overfeeding, especially on high-calorie foods, can lead to obesity, making the rabbit appear larger.


Parasitic infections, gastrointestinal diseases, or other health issues can stunt growth in rabbits, leading them to be undersized.

Regular veterinary care is essential to ensure they reach their potential size.


Rabbits kept in cramped spaces might not grow to their full size due to stress and lack of exercise. Conversely, those with ample space for movement and play are likely to develop better.


Neutering or spaying rabbits can influence their growth.

Fixed rabbits often have a more consistent growth pattern and avoid potential weight gains associated with reproductive behaviors.


Rabbits, depending on the breed, can continue growing for several months to over a year.

It’s important to know the typical growth curve of a specific breed to anticipate its full adult size.

Rabbit Size Calculator

At What Age Is A Rabbit Full Grown?

The age a rabbit reaches full size varies by breed; smaller breeds mature by 5-7 months, while larger breeds can take 12-18 months.

Rabbit growth and maturity are largely dictated by breed, with some reaching their full size quicker than others. Let’s delve into some specifics:

  • Smaller Breeds: These rabbits tend to reach maturity faster.
    • Netherland Dwarf: One of the tiniest rabbit breeds, it typically weighs around 1-2.5 pounds. They reach their full size by 5-7 months.
    • Mini Rex: With its plush, velvety fur, a Mini Rex weighs about 3.5-4.5 pounds and is full-grown by 5-7 months.
  • Larger Breeds: These breeds take longer to reach their complete size.
    • Flemish Giant: As one of the largest rabbit breeds, they can weigh over 20 pounds. Flemish Giants typically take 12-18 months to fully mature.
    • Continental Giant: Similar to the Flemish Giant, the Continental can weigh more than 20 pounds and also takes around 12-18 months to reach full growth.
  • Medium Breeds: These are somewhere in between.
    • Dutch Rabbit: A popular breed weighing around 4-5.5 pounds, the Dutch rabbit usually matures by 6-9 months.

How Big are Rabbits When They’re Born?

Rabbits, when born, are typically tiny, weighing between 1 to 2 ounces and measuring about 3 to 4 inches in length.

What’s The Average Size For A Rabbit?

The average size for a rabbit varies by breed, but typically:

  • Small Rabbits: Typically measure 8-12 inches in length and weigh 2-4 pounds.
  • Medium Rabbits: Generally range from 14-16 inches in length and weigh 4-6 pounds.
  • Large Rabbits: Often measure 20-30 inches in length and can weigh 10-20 pounds or more.

Are Male Rabbits Bigger Than Female Rabbits?

Typically, male rabbits (bucks) and female rabbits (does) can be similar in size. However, in some breeds, does may be slightly larger due to their reproductive anatomy and capacity to carry litters. Size can vary based on individual genetics and care.

Do Smaller Rabbit Breeds Live Longer?

Smaller rabbit breeds often have longer lifespans than larger breeds. On average, smaller breeds live 8-12 years, while larger breeds might live 5-8 years. Lifespan is also influenced by factors like diet, care, and genetics.

Rabbit Size By Breed


The Dutch rabbit is easily recognizable with its distinctive white and colored markings. A medium-sized breed, it’s known for its friendly temperament and active nature.

  • Typical height: 6-7 inches
  • Typical length: 14-16 inches
  • Typical weight: 4-5.5 pounds
  • Full adult size age: 6-9 months

Flemish Giant

One of the largest rabbit breeds, the Flemish Giant truly lives up to its name. With a gentle disposition, it’s often referred to as the “gentle giant” of the rabbit world.

  • Typical height: 12-14 inches
  • Typical length: 26-30 inches
  • Typical weight: 12-20 pounds
  • Full adult size age: 12-18 months


The Lionhead rabbit is a small breed, named for the mane-like circle of fur around its head, reminiscent of a lion’s mane. Its appearance is both striking and adorable.

  • Typical height: 6-8 inches
  • Typical length: 8-10 inches
  • Typical weight: 2.5-3.5 pounds
  • Full adult size age: 5-7 months

Mini Lop

The Mini Lop is a charming, small to medium-sized rabbit known for its floppy ears and sweet demeanor. It’s a popular choice among pet owners.

  • Typical height: 6-8 inches
  • Typical length: 12-15 inches
  • Typical weight: 5.5-7.5 pounds
  • Full adult size age: 6-9 months

New Zealand

The New Zealand rabbit is a medium to large breed, known for its soft, short fur and calm temperament. They come in a variety of colors and are often used for show.

  • Typical height: 7-9 inches
  • Typical length: 18-20 inches
  • Typical weight: 9-12 pounds
  • Full adult size age: 10-12 months


Distinctive for its velvety fur and upright ears, the Rex rabbit is medium-sized and has a friendly nature, making it another favorite among enthusiasts.

  • Typical height: 7-8 inches
  • Typical length: 14-16 inches
  • Typical weight: 7-10 pounds
  • Full adult size age: 8-10 months