If you’re wondering ‘how much do bunnies weigh?’ you’ve come to the right place. We’re going to take an in-depth look at bunny weights – from newborns to fully grown adults. We’ll examine the many factors that influence bunny size and mass, from breed and genetics to diet and lifestyle.

We’ll also provide weight ranges for common pet and wild rabbit species. If you’re short on time, here’s a quick answer to your question: Most domestic pet rabbits weigh between 2 and 5 pounds when fully grown.

In this comprehensive guide, we’ll cover everything you need to know about typical bunny weights. You’ll learn about different size classifications, growth patterns, weight fluctuations, and what contributes to healthy bunny weights.

Whether you’re a current or prospective rabbit owner, you’ll find all the details right here.

Newborn Bunnies

Birth Weight Range

When it comes to newborn bunnies, their weight can vary depending on various factors. On average, newborn bunnies typically weigh between 40 and 60 grams at birth. However, it’s important to note that the birth weight range can be quite wide, with some bunnies weighing as little as 20 grams and others weighing up to 100 grams.

The weight of a newborn bunny is influenced by factors such as the breed of the rabbit, the size and health of the mother, and the number of siblings in the litter.

Rapid Early Growth

After being born, bunnies experience rapid growth during their early stages of life. They start gaining weight quickly and can double their birth weight within the first week. It’s not uncommon for bunnies to gain around 10 grams per day during this time.

This rapid growth is essential for their overall development and to ensure they reach a healthy weight as they mature.

Factors Affecting Newborn Size

The size of newborn bunnies can be influenced by various factors. Genetics play a significant role, as certain rabbit breeds tend to have larger or smaller babies. Additionally, the health and nutrition of the mother rabbit during pregnancy can affect the size of the newborns.

A well-nourished and healthy mother is more likely to give birth to larger bunnies. The size of the litter can also impact the size of each individual bunny. In larger litters, the newborns may be smaller in size compared to those in smaller litters.

For more information on the growth and development of newborn bunnies, you can visit reputable websites such as The Spruce Pets or RabbitsOnline.

Bunny Breeds and Average Weights

Small Breeds (<3 lbs)

Small bunny breeds are known for their petite size and adorable appearance. These breeds typically weigh less than 3 pounds (1.36 kg). Some examples of small bunny breeds include the Netherland Dwarf and the Mini Rex.

Despite their small size, these bunnies are full of energy and make great companions for those living in smaller spaces.

Medium Breeds (3-6 lbs)

Medium-sized bunny breeds fall within the weight range of 3 to 6 pounds (1.36 – 2.72 kg). They are slightly larger than small breeds but still maintain their cute and cuddly nature. Some popular medium bunny breeds include the Holland Lop and the Lionhead.

These bunnies are known for their friendly personalities and make wonderful pets for both individuals and families.

Large Breeds (>6 lbs)

Large bunny breeds are the heavyweight champions of the bunny world, weighing over 6 pounds (2.72 kg). Examples of large bunny breeds include the Flemish Giant and the Checkered Giant. These bunnies are big in size and have a commanding presence.

Despite their size, they are known for their gentle and docile nature, making them great pets for experienced bunny owners.

It’s important to note that these weight ranges are general guidelines and individual bunnies may vary in size. Factors such as genetics, diet, and exercise can also influence a bunny’s weight. If you’re unsure about your bunny’s weight or have concerns about their health, it’s always best to consult with a veterinarian.

Weight Changes Throughout Life

Bunnies, like any other living creatures, undergo weight changes throughout their lives. These changes are influenced by various factors such as their age, breed, diet, and overall health. Understanding the weight changes in bunnies is essential for their proper care and well-being.

Growth Rate

During their first few months of life, bunnies experience rapid growth. The growth rate varies depending on the breed, but generally, bunnies will double their birth weight within the first 10 to 14 days. By the time they reach 8 weeks old, most bunnies will have reached their adult weight.

It is crucial to provide them with a balanced diet during this period to support their growth and development.

Adult Weight

Once bunnies reach their adult stage, their weight will stabilize and remain relatively constant. The average adult bunny weight can vary significantly depending on the breed. For example, a small breed like the Netherland Dwarf may weigh between 1.5 to 2.5 pounds, while larger breeds like the Flemish Giant can weigh up to 14 pounds or more.

It is important to note that individual bunnies within a breed can also have slight variations in weight.

Senior Weight Loss

As bunnies age, they may experience weight loss, similar to humans. This can be attributed to a decrease in muscle mass and a slower metabolism. Senior bunnies may also develop dental issues or other health conditions that can affect their appetite and cause weight loss.

It is crucial to monitor the weight of senior bunnies closely and consult with a veterinarian if there are any significant changes. Ensuring they have a balanced diet and regular exercise can help maintain their weight and overall health in their golden years.

For more information on bunny weight and care, you can visit reputable sources such as rabbit.org or petmd.com. Remember, keeping a close eye on your bunny’s weight and making necessary adjustments to their diet and lifestyle will help ensure they lead a healthy and happy life.

Understanding Healthy Bunny Weights

When it comes to our furry friends, it’s important to keep an eye on their weight to ensure they stay healthy and happy. Bunnies, like any other pet, come in various shapes and sizes, so their ideal weight can differ.

However, understanding what constitutes a healthy weight range for bunnies is crucial in maintaining their overall well-being.

Ideal Weight Range

The ideal weight range for bunnies varies depending on their breed, age, and size. On average, most adult rabbits weigh between 2 to 4 pounds (0.9 to 1.8 kilograms). However, larger breeds, such as Flemish Giants, can weigh up to 15 pounds (6.8 kilograms) or more.

Conversely, smaller breeds, like Netherland Dwarfs, typically weigh around 2 pounds (0.9 kilograms).

It’s important to note that younger bunnies will weigh less initially and gradually gain weight as they grow. It’s best to consult with a veterinarian to determine the appropriate weight range for your specific bunny.

Monitoring Weight

To ensure your bunny stays within a healthy weight range, regular monitoring is essential. Weighing your bunny at home can be a challenging task, especially if they are not comfortable being handled. However, you can look out for certain signs that may indicate weight gain or loss.

One of the easiest ways to monitor your bunny’s weight is by observing their appearance and body condition. Run your hands over their body and feel for any prominent bones or excessive fat. A healthy bunny should have a moderate layer of fat covering their ribs and spine, but not to the point where it becomes difficult to feel them.

If you notice any sudden weight loss or gain, it’s always best to consult with a veterinarian. They can provide guidance on the appropriate steps to take to ensure your bunny’s health is not compromised.

Signs of Over and Underweight

Both underweight and overweight bunnies can experience health issues. An underweight bunny may have a visibly protruding backbone, ribs, and hips. They may also exhibit a lack of energy and a decreased appetite.

On the other hand, an overweight bunny may have difficulty grooming themselves, become lethargic, and have trouble breathing.

If you suspect your bunny is under or overweight, it’s crucial to take action. A balanced diet, proper exercise, and regular veterinary check-ups can help your bunny maintain a healthy weight and prevent potential health problems.

Remember, every bunny is unique, and their ideal weight may differ. By understanding the healthy weight range for bunnies, monitoring their weight, and recognizing signs of over and underweight, you can ensure your furry friend leads a happy and healthy life.

Factors That Influence Bunny Size


Just like with humans and other animals, genetics plays a significant role in determining the size of bunnies. Different rabbit breeds have distinct genetic traits that contribute to their size and weight.

Certain breeds, such as the Flemish Giant and the Continental Giant, are known for their large size and can weigh up to 15 pounds or more. On the other hand, smaller breeds like the Netherland Dwarf typically weigh between 1 and 3 pounds.

Genetics also influence the body shape and proportions of bunnies. Some rabbits have long, slender bodies, while others have compact, muscular builds. These variations in genetics can affect a bunny’s overall size and weight.


The diet of a bunny plays a crucial role in its growth and weight. Providing rabbits with a balanced and nutritious diet is essential for their overall health and size. A diet rich in hay, fresh vegetables, and high-quality rabbit pellets helps ensure that bunnies receive the necessary nutrients for proper growth.

Overfeeding or underfeeding can have significant impacts on a bunny’s weight. Obesity can lead to health problems, while malnutrition can stunt growth and development. It is essential to provide bunnies with the appropriate portion sizes and monitor their food intake to maintain a healthy weight.


Regular exercise is vital for maintaining a healthy weight and body condition in bunnies. Bunnies that have ample space and opportunities to run, hop, and explore tend to be more active and have better muscle tone. This increased activity level can contribute to a leaner physique.

On the other hand, bunnies that have limited physical activity may be more prone to weight gain and obesity. Providing bunnies with toys, tunnels, and safe areas to explore can help encourage exercise and keep them at a healthy weight.

Health Conditions

Some health conditions can affect a bunny’s size and weight. For example, dental problems can make it difficult for bunnies to eat and maintain a healthy weight. Gastrointestinal issues, such as bloating or diarrhea, can also impact a bunny’s weight and overall well-being.

Regular veterinary check-ups are essential to monitor a bunny’s health and address any potential health concerns that may affect its weight. If you notice any changes in your bunny’s appetite, weight, or behavior, it is essential to consult with a veterinarian for proper diagnosis and treatment.

Reproductive Status

Reproductive status can also influence a bunny’s size and weight. Female bunnies that have been spayed tend to have a leaner body condition compared to intact females. Neutered males may also have a leaner physique compared to intact males.

Unaltered rabbits have hormonal fluctuations that can impact their weight. In some cases, intact females may gain weight due to hormonal changes associated with their reproductive cycles. However, it’s important to note that reproductive status alone does not determine a bunny’s overall size and weight.

Weighing Wild Rabbits

When it comes to the weight of bunnies, there are different factors to consider, such as the species and habitat. Let’s take a closer look at the weights of different types of wild rabbits.


Cottontail rabbits are a common sight in North America. These small mammals typically weigh between 1.5 to 3 pounds (0.7 to 1.4 kilograms). However, this can vary depending on the region and availability of food. In some cases, larger cottontails can weigh up to 4 pounds (1.8 kilograms).

It’s important to note that these weights are for adult rabbits; baby cottontails weigh significantly less.


Jackrabbits are larger and more athletic than cottontails. Found in various parts of North America, these rabbits can weigh anywhere between 3 to 7 pounds (1.4 to 3.2 kilograms). Some species, like the black-tailed jackrabbit, can even reach weights of up to 9 pounds (4.1 kilograms).

Their long legs and powerful hindquarters make them excellent jumpers, allowing them to evade predators.

European Rabbits

European rabbits, also known as common rabbits, are native to Europe and parts of Africa. These rabbits have been introduced to various countries around the world, including Australia and New Zealand. They typically weigh between 2 to 4 pounds (0.9 to 1.8 kilograms).

However, it’s worth mentioning that populations in different regions can vary in size due to factors such as nutrition and genetics.

It’s important to remember that these weight ranges are generalizations and can vary depending on individual factors. If you’re interested in learning more about wild rabbits, the National Wildlife Federation and ARKive are great resources to explore.


Knowing typical weight ranges for bunnies provides an important benchmark for monitoring your pet’s health. But each rabbit has their own ideal size based on breed, body type, and lifestyle factors. While approximate weights give a general guide, assessing your bunny’s body condition score and any changes is crucial.

If you have concerns about abnormal weight loss or gain in your rabbit, consult your veterinarian. With proper nutrition and care, your bunny can thrive at a healthy happy weight.

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