Desert
species, such as the spiny mouse, can survive happily
without any external source of water. As an extra water
conservation measure, such species produce only limited
amounts of droppings and a highly concentrated urine.
Some spiny mice can live purely on tiny quantities of
sea-water and even your ordinary house mouse can get by
almost indefinitely without liquids.
This
does not mean that you should ever leave your tame mice
without a source of fresh, clean water! They are domesticated
varieties which may not be as hardy as their wild cousins.
