Bearded dragons can move through water using a paddling motion, but they are not natural swimmers and should never be placed in deep water. Shallow, supervised baths are appropriate and can actually be beneficial for hydration, shedding, and hygiene.
For bathing, use a shallow container with lukewarm water (around 85 to 92 degrees Fahrenheit) that reaches no higher than the dragon's elbows or chest. The animal should be able to stand comfortably with its head well above the waterline at all times. A non-slip surface like a towel on the bottom of the container helps the dragon feel secure.
Baths typically last 10 to 20 minutes and can be offered one to three times per week depending on the dragon's hydration needs and whether it is approaching a shed cycle. Many dragons drink during baths, and some absorb water through their vent (cloaca), so baths serve as a supplemental hydration source, which is especially helpful for dragons that rarely drink from a standing water bowl.
Supervision is non-negotiable. Bearded dragons can tire quickly in water, and even shallow water poses a drowning risk if the animal flips onto its back or panics. Never leave a bearded dragon unattended during bath time, and never use a full bathtub, pool, or any container where the water level could cover the dragon's head.
Some dragons enjoy bath time and will splash and paddle with apparent enthusiasm. Others find it stressful and will scramble to escape. If your dragon consistently shows signs of stress during baths, such as frantic clawing, darkened beard, and rapid breathing, keep sessions short and infrequent, or try a very shallow approach with barely enough water to cover the feet.
After bathing, gently pat the dragon dry with a soft towel and return it to its warm enclosure so it can bask and return to its preferred body temperature. Avoid cold drafts during and after the bath.