The kittens’ mother provides the best milk for their needs at that age. Cow’s milk can upset a kitten’s stomach and should be used as a last resort. Kittens should be drinking water by the time they are 4 to 6 weeks of age.Click to see full answer. Also know, how do I get my kitten to drink water? How to Get a Cat to Drink More Find the Flavor: Add a little bit of tuna or clam juice, or low-sodium chicken broth (straight broth that does not include onion or garlic.) to their water. Switch it Up: Switch from dry food to wet. Chill Out: Place a few ice cubes in their water bowl. why does my kitten not drink water? Causes. A cat can become dehydrated by not drinking enough water or urinating more than she’s ingesting, or, in extreme situations, because of vomiting or blood loss. Kidney disease, heat stroke and diabetes can all be related to dehydration, says Preventive Vet. Keeping this in consideration, do kittens drink a lot of water? Cats that are fed crunchy foods sometimes overcompensate for the lack of water their meals provide. In other words, dry foods make them thirsty. So they drink—lots. Diabetes and kidney disease are among the medical conditions that can cause increased drinking in cats.Can 3 week old kittens drink water?For the first few weeks of a kitty’s life, water is unnecessary. Newborn kittens are able to get all of the nutrition that they need from their mother’s milk. If mama cat isn’t around, then a kitten milk replacer shall do, too.