That said, many modern - day cats don't drink enough water and are in a
state of mild dehydration because they eat a lot of dry food.
Lose just 1.5 % of the water in your body (the human body is usually about 60 % H2O), and you've reached the tipping
point of mild dehydration.
These should only be used in
cases of mild dehydration as moderate dehydration will often require resuscitation with intravenous fluids.