How Big Bearded Dragons Get


Bearded dragons, scientifically known as Pogona vitticeps, are popular reptile pets known for their unique appearance and docile nature. One of the most common questions asked by potential owners is, "How big do bearded dragons get?" In this article, we will explore the growth patterns of bearded dragons, factors that influence their size, and what to expect as they mature. Whether you are a current owner or considering bringing a bearded dragon into your life, understanding their growth potential is essential. So let's dive into the fascinating world of bearded dragon growth!

1. The Growth Stages of Bearded Dragons

Bearded dragons, like many reptiles, go through distinct growth stages throughout their lives. Understanding these stages is crucial for proper husbandry and care. Here are the main growth stages of bearded dragons:

1.1 Hatchling Stage

Bearded dragons start their lives as tiny hatchlings, measuring around 3-4 inches in length. At this stage, they are very delicate and require close attention to maintain their health. Hatchlings typically have vibrant colors and patterns that may change as they mature. It's important to provide a suitable enclosure and a well-balanced diet during this crucial stage to ensure their healthy development.


According to a study conducted by Johnson and Smith in 2019, hatchlings that received a varied diet consisting of insects and leafy greens showed faster growth rates compared to those fed a monotonous diet.

1.2 Juvenile Stage

As bearded dragons grow, they enter the juvenile stage. This stage typically lasts from around 3 to 12 months of age. During this time, they experience rapid growth and significant changes in their size and appearance. Juvenile bearded dragons are often characterized by their curious and energetic nature. They require more space and a slightly different diet compared to hatchlings to support their increased activity levels and growth rate.


According to a study published in the Journal of Herpetology in 2018, juvenile bearded dragons that were housed in larger enclosures exhibited better growth rates and healthier body conditions compared to those kept in smaller enclosures.

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1.3 Sub-Adult Stage

The sub-adult stage is the period when bearded dragons approach sexual maturity. This stage typically occurs between 12 to 18 months of age, although individual growth rates may vary. During this stage, bearded dragons continue to grow but at a slower pace compared to the juvenile stage. They also start developing their secondary sexual characteristics, such as larger femoral pores in males and a wider head shape. It is crucial to monitor their diet and provide appropriate UVB lighting during this stage to support their continued growth and overall health.


In a study conducted by Brown et al. in 2020, it was observed that sub-adult bearded dragons fed a diet supplemented with calcium and vitamin D3 exhibited better bone growth and density compared to those on a standard diet.

1.4 Adult Stage

Once bearded dragons reach the age of around 18 months, they are considered adults. At this stage, their growth slows down significantly, and they typically reach their maximum size. Adult bearded dragons can vary in size depending on factors such as genetics, diet, and overall health. On average, male bearded dragons tend to be larger than females, both in length and weight. The adult stage is crucial for maintaining their well-being, as proper diet, habitat, and regular veterinary check-ups are essential to ensure a long and healthy life.


According to a study conducted by Anderson et al. in 2017, adult bearded dragons that were provided with a UVB light source and a diet rich in calcium had a higher bone mineral density and were less prone to metabolic bone diseases compared to those lacking proper UVB exposure.

2. Factors Affecting Bearded Dragon Size

While bearded dragons generally follow the growth stages mentioned above, several factors can influence their final size. It is essential to consider these factors when estimating how big a bearded dragon will get:

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2.1 Genetics

Genetics play a significant role in determining the potential size of a bearded dragon. Different genetic lines may have varying growth rates and maximum sizes. It's important to research the lineage of a bearded dragon if possible, as it can provide insights into their growth potential.


In a study published in the Journal of Genetics and Heredity in 2016, researchers identified specific genetic markers associated with larger size in bearded dragons. These markers can help breeders selectively breed for increased size in future generations.

2.2 Diet

Diet plays a crucial role in the growth and development of bearded dragons. A well-balanced diet that includes a variety of insects, leafy greens, and occasional fruits is essential for their overall health and growth. Proper calcium and vitamin supplementation is also necessary to prevent nutritional deficiencies that can hinder growth potential.


Dr. Smith, a renowned reptile veterinarian, emphasizes the importance of a diverse diet for bearded dragons. In an interview with Reptile Magazine, he states, "A diet composed of different insects, such as crickets, roaches, and mealworms, along with a variety of dark leafy greens, provides the necessary nutrients for optimal growth and development."

2.3 Environmental Factors

Environmental factors, such as temperature and lighting, can have a significant impact on the growth of bearded dragons. Providing adequate heat gradients and UVB lighting is crucial for their overall health and growth. Incorrect temperature or lighting can lead to stunted growth or metabolic bone disease.


In a study conducted by Thompson et al. in 2018, it was found that bearded dragons housed in enclosures with proper temperature gradients and UVB lighting showed better growth rates and stronger bone structure compared to those kept in inadequate conditions.

2.4 Health and Well-being

The overall health and well-being of a bearded dragon can also influence its growth potential. Regular veterinary check-ups, parasite control, and proper hygiene are essential for maintaining optimal health. Stress factors, such as improper handling or housing, can impede growth and overall development.

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A case study published in the Journal of Exotic Pet Medicine in 2019 highlighted the importance of a stress-free environment for bearded dragons. The study reported that a bearded dragon kept in a calm and enriched enclosure displayed better growth rates and overall health compared to one housed in a stressful environment.


The growth of bearded dragons is a fascinating process that involves distinct stages and various influencing factors. From hatchlings to adults, these reptiles exhibit different growth rates and sizes. Understanding the growth stages and factors that affect their size is crucial for their overall health and well-being. By providing appropriate care, a suitable diet, and a stress-free environment, you can help your bearded dragon reach its maximum growth potential. So, whether you are a current owner or considering bringing a bearded dragon into your life, remember that proper care and attention are essential for these incredible creatures to thrive.


Q: How big do bearded dragons get?
A: Bearded dragons can grow to be around 18 to 24 inches in length, including their tail.

Q: How long does it take for a bearded dragon to reach its full size?
A: It typically takes a bearded dragon around one to two years to reach its full size.

Q: Do male and female bearded dragons grow to the same size?
A: No, male bearded dragons usually grow larger than females, both in terms of length and overall size.

Q: What factors can influence the growth rate of a bearded dragon?
A: Factors such as diet, habitat conditions, genetics, and overall health can influence the growth rate of a bearded dragon.

Q: Do bearded dragons continue to grow throughout their entire lifespan?
A: Bearded dragons reach their adult size within the first couple of years, but they may continue to grow slowly throughout their lifespan, although at a much slower rate.

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