A bearded dragon is a lizard. 

A bearded dragon is a lizard. 
These lizards have bumpy skin. They have spikes on their bodies. They can change color to stay warm. 
They have a special beard under their neck. The beard can turn black. They puff it up to look scary.
They like to climb on branches. They also sit on rocks in the sun. They sleep at night.
They eat plants and bugs. They can live for many years. 
Bearded dragons are special lizards from Australia. 

These lizards have bumpy, spiny scales. They have a dark area under their throat called a beard. They puff this beard out to look scary. This helps them fight off predators. They also use their beards to talk to other dragons. 
Bearded dragons eat plants and bugs. They can change color to help stay warm. Some dragons go into brumation. This is a type of sleep where they do not eat for months. They still drink water during this time. 
Bearded dragons are amazing lizards from the genus Pogona. 

These lizards use many signals to communicate. A dominant male might bob his head up and down. This shows he is the boss of his area. Smaller dragons often wave their arms to show submission. This tells the bigger dragon they are not a threat. 
Scientists have studied these lizards for a long time. They live in many parts of Australia. Their home includes deserts, woodlands, and even coastal dunes. 
Bearded dragons have some very interesting physical facts. Adult males can grow much longer than females. 
Many people around the world enjoy these lizards as pets. 
The genus Pogona consists of eight lizard species commonly known as bearded dragons. 

Bearded dragons possess several distinct physical characteristics. They have broad, triangular heads and flattened bodies. Their entire bodies are covered in clusters of spiny scales. These spikes help them appear more dangerous to potential predators. When a dragon feels threatened, it will puff up its body. This makes the spikes look even larger and more intimidating. They also use a behavior called gaping, where they open their mouths wide. These physical actions work together to defend the lizard from danger.
Communication in bearded dragons involves specific gestures and visual signals. Adult lizards are very territorial and use displays to manage social interactions. A dominant male will perform a head-bobbing display. This involves moving the head up and down quickly. Males also use this behavior to impress females during mating rituals. To show submission, smaller dragons will perform a hand-waving gesture. This tells a larger dragon that they are not a threat. 
These lizards are semiarboreal, meaning they spend much time in trees or bushes. They are also diurnal, so they are active during the daylight hours. In the mornings and afternoons, they bask on rocks or exposed branches. At night, they seek shelter by digging holes or climbing into tree crevices. They inhabit many environments across Australia, including deserts, shrublands, and coastal dunes. Their range extends from the eastern states to the eastern half of South Australia. They also live in the southeastern Northern Territory. 
Bearded dragons undergo a period of dormancy called brumation. This process is similar to hibernation but has specific differences. During brumation, reptiles may go months without eating. However, they will still drink water sporadically during this time. Brumation occurs when temperatures drop below certain levels. Specifically, night temperatures must fall between 15.5 and 21.0 °C. During the day, temperatures must be between 24.0 and 26.5 °C for 8 to 10 hours. This state allows them to survive when the climate is not ideal for activity.
Reproduction in this genus involves complex biological processes. Females can store sperm in structures called oviductal crypts. This allows a female to lay a clutch of 11 to 30 eggs from a single mating. They also exhibit temperature sex determination during embryo development. This means the temperature of the environment influences the sex of the offspring. High incubation temperatures, up to 36 °C, can cause sex reversal. This results in a female that has a male genotype. 
In the pet industry, bearded dragons are highly popular. The central bearded dragon is the most common species kept in captivity. They were introduced to the United States in the 1990s. Through selective breeding, humans have created many different colors and patterns. Some dragons can even be bred to be completely white. 
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