[The Inuit drink] large quantities of water (5 to 6 litres per day), characteristic of the protein-rich diet that triggers renal elimination of the products of catabolism. Jeremy MacClancy, Consuming the Inedible: Neglected Dimensions, p. 123
There's also the example of wolves and other carnivores who drink copious amounts of water after feasting on flesh. This vid is not of an actual wolf, but you get the idea: Josie Wales Wolfdog Wolf Dog drinking Water
Five to six liters is about 10.5 to 12.5 pints of water a day. That sounds excessive to me, so if anyone has any information on how much water the Inuit drank, I'd appreciate it.
I drink mostly mineral water myself, as some studies indicate it provides additional benefits and I figure Stone Age water was probably more mineral-rich than most of today's tap or bottled water.