Keep Your Pet Hydrated – The free-falling stream of fresh, filtered water entices pets to drink more waterKeep Your Pet Healthy – Keeping cats and dogs hydrated helps to prevent urinary tract infections and kidney diseaseFiltered Water – Includes a replaceable carbon filter that removes bad tastes and odours; 1-month filter supply includedPerfect Size for Cats and Small Dogs Automatic water fountain holds 40 oz. (1.2 litres) of water and is the ideal size for your cat or small dog