Cranberry extract has been well documented in scientific research as a potential natural urinary tract infection treatment for pets. Cranberry is a natural antiseptic. It helps to reduce the likelihood of infection by interfering with the bacteria’s ability to adhere to the lining of the urinary tract and bladder. Cranberries are also a natural source of Vitamin C, which can acidify the urine and limit bacteria growth. A natural cranberry supplement for dogs and cats can help to prevent recurrent urinary tract infections.