Hi Curro! Sorry for the delayed response — right now, our forums are undergoing a big update, so you will not be getting replies from anyone outside moderators as we get the website ready for a re-opening.
Most likely, those water puddles are actually urine. Just like if a human consumes more water than needed, a rabbit’s urine will be clear and odorless if it’s drinking more water than its body needs. It could be that your rabbit is drinking more water than usual due to dental discomfort (common in dwarves, though he is young. Water acts as a lubricant and makes sores/irritated spots caused by sharp teeth edges feel a little better). Some rabbits drink water out of boredom as well. Lastly, there could be a bladder issue, where your rabbit cannot hold his bladder (such as a UTI).
Can you describe his typical diet, activity level/exercise time, and what he typically eats most throughout the day? Specifically, it’d be helpful to know whether he eats a lot of hay.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.