BRUMATION IN BEARDED DRAGONS
Understanding the Mystery...
Written by Denise R. Bushnell in June, 2008
Page 2 of 11
REASONS FOR BRUMATION
Just as with mammals, when in the wild there are certain times of the year when temperatures drop, and food becomes difficult to find for Bearded Dragons. The many insects that they use as a source of protein die off, and most vegetation that they consume goes dormant during the winter months, and so will not provide them with the much needed nourishment that they need.
Also, most Bearded Dragons will not drink from standing water, as they don’t recognize it as something that they CAN drink. Instead, most Bearded Dragons will take in water by lapping morning and evening dew from leaves and plants in their environment, in order to keep themselves hydrated. Once colder weather arrives, the morning and evening dew is replaced with frost, which is a poor source of hydration for them.
When faced with these problems to overcome, Beardies will burrow under things, or bury themselves in the soil, in order to keep from freezing, and their bodies will draw in moisture from the soil, through their vent, during their winter sleep, to ensure that they remain adequately hydrated enough to survive until Spring.
Also, a Bearded Dragon’s body depends on warmth from the sun in order to digest their food, and break it down into the nutrients that their bodies need, so when temperatures drop, Beardies, in the wild, would not be able to digest their food, even if they did find a food source to sustain them. Therefore, when the hours of daylight get shorter, the sun doesn’t shine as brightly, and the temperatures become colder, they brumate, in order to survive.
In order to ensure their survival, Bearded Dragons have evolved with the ability to voluntarily slow their metabolism down to nearly a standstill, which will enable them to eat and drink nothing for long periods of time, without losing more than a few grams of weight, and while maintaining their overall health. This has become instinctual to them, over time, and so many Bearded Dragons do brumate, even while in captivity, even though we provide them with warm temperatures and and a steady source of food.
You may be thinking that, since we now provide them with everything that their bodies need, year round, why do they still brumate? Over hundreds of years of evolution, their bodies have adapted to the harsh conditions in the wild that they live in. We can’t expect that the way that their bodily functions work are going to change in the mere 20+ years during which we’ve brought them into our lives and homes, and domesticated them. To expect that their bodies and instincts are going to change in that short space of time, just because their lives have become easier for them, because of our providing for their needs, would just be an exaggerated sense of self importance on our part.

