If you've got small pets like rabbits, chinchillas, guinea pigs, hedgehogs or ferrets, this Kathson water feeder is about to make your life so much easier! It holds 17 ounces (that's about 500ml) of water, which is perfect if you're busy or travel occasionally - your furry friends will always have fresh water available. The gravity flow design is super smart - it controls the water flow to prevent spills and messes in the cage. Unlike those noisy water bottles with ball bearings, this one is practically silent when your pets drink from it. You can hang it inside or outside the cage depending on your setup (if you've got a curious pet who likes to play with everything, outside might be better). The no-leak seal is awesome - no more wet bedding or wasted water, and it keeps dust and debris out so the water stays clean. What I really love is that you can position it at the right height so your pets don't have to strain their necks to drink. It snaps on and off easily for cleaning and refilling too. Seriously, it's way better than traditional water bowls that can get dirty quickly or cause chin infections from constant wetness. Your little buddies will stay hydrated and happy with this feeder!