How Big Will a Mini Rex Get? A Guide to Mini Rex Rabbit Size

Mini Rex rabbits are a popular breed of domestic rabbits known for their small size and soft fur. They are a favorite among pet owners due to their adorable appearance and docile temperament. One of the most common questions new owners have is how big will a Mini Rex get.

On average, Mini Rex rabbits will weigh between 3.5 to 4.5 pounds when fully grown. This is larger than many other dwarf breeds, which typically weigh a maximum of 3.5 pounds. However, the British Rabbit Council only considers rabbits “true” dwarf rabbits if they remain under 2.5 pounds. Mini Rex rabbits are well-proportioned and have a compact, muscular build. They have a lifespan of 7 to 10 years and are known for being sweet, friendly, and easygoing.

Average Size of Mini Rex

Mini Rex rabbits are a popular breed of domestic rabbits known for their small size and soft, velvety fur. These rabbits are a favorite among pet owners due to their friendly and affectionate nature.

Mini Rex rabbits weigh between 3 to 4.5 pounds when fully grown. However, the size can vary depending on genetics, diet, and exercise. Females tend to be slightly larger than males.

In terms of length, Mini Rex rabbits typically reach around 10 inches. They have a compact body with a fully rounded back and straight legs. Their head is close to the shoulders, and they have a short neck.

Mini Rex rabbits come in various colors and patterns, including black, blue, chocolate, and lilac. They have a lifespan of around 7 to 10 years if properly cared for.

Factors that Affect Mini Rex Size


Genetics is one of the most significant factors determining the size of a Mini Rex rabbit. The breeders select the parents based on their size and weight to produce rabbits that conform to the breed’s standard. However, genetics is not the only factor that determines the size of a Mini Rex rabbit.


Diet is another crucial factor that affects the size of a Mini Rex rabbit. A well-balanced, nutritious diet is essential for the rabbit’s overall health and growth. The diet should include hay, fresh vegetables, and a limited rabbit pellets. Overfeeding can lead to obesity and other health problems, while underfeeding can stunt the rabbit’s growth.


The Mini Rex rabbit’s environment can also affect its size. The rabbit needs enough space to move around and exercise. A cramped living space can limit the rabbit’s growth and development. The temperature and humidity of the environment can also affect the rabbit’s growth. The rabbit should be kept in a comfortable environment with proper ventilation and temperature control.

How to Ensure Healthy Growth of Mini Rex

Mini Rex rabbits are known for their small size and plush, velvety fur. They typically weigh between 3.5 and 4.5 lbs, making them larger than many dwarf breeds. To ensure healthy growth of Mini Rex, it is important to provide them with proper care and nutrition.


A balanced diet is essential for the healthy growth of Mini Rex rabbits. They should be fed a fiber-rich diet, protein, and vitamins. A good quality hay should form the bulk of their diet, along with fresh vegetables and fruits. Pellets can also be given in moderation but should not make up most of their diet.


Mini Rex rabbits are energetic animals and require plenty of exercise to stay healthy. They should have ample space to run, jump, and play. A minimum of 8 to 12 square feet of living space is recommended, with extra space for exercising and playing. Mini Rex rabbits can become distressed, unhappy, and physically unwell without enough space to exercise.

Temperature and Environment

Mini Rex rabbits should be kept in a well-ventilated place to ensure they do not get too hot or cold. The ideal temperature for them is below 80 degrees Fahrenheit. They can withstand cold temperatures thanks to their thick fur, but they should always be kept warm. Their living space should be kept clean and dry, and they should always have access to fresh water.

Health Check-ups

Regular health check-ups are important to ensure Mini Rex rabbits’ overall health and well-being. They should be taken to a veterinarian for a check-up at least once a year. Signs of illness such as lethargy, loss of appetite, or diarrhea should be taken seriously and medical attention should be sought immediately.

By following these guidelines, Mini Rex rabbits can grow healthy and happy. Providing them with a balanced diet, ample exercise, a suitable living environment, and regular health check-ups can help ensure their long-term health and well-being.