My bearded constantly drink out the water dish I put in the cage for them. They suck it up like a shopvac... I put a small water bowl in there for them at all time so if they are
thirsty, they can drink whenever they want. (I use a small water bowl to prevent excessive soaking which can lead to scale rot.) Some people prefer to soak their bearded instead and if they are
thirsty, they will drink while soaking. I think it's impartant to have a water dish for youngsters because they are small and are easily dehydrated. From my experience most reptiles will drink if given the opportunity.