Many cats and dogs do not drink as much water as they should. By not drinking enough water, your pet"s urine may become concentrated and may lead to urinary tract disease, dehydration, constipation and/or kidney disease. Cats with urinary tract or kidney disease, in particular, have a critical need for water to support kidney function and to prevent crystal formation and other obstructions. Clean and odor-free filtered water entices pets to drink more.