HuffPost may receive a commission from some purchases made via links on this page. Every item is independently curated by the HuffPost Shopping team. Prices and availability are subject to change. If you’re a pet owner, you’ve probably seen or heard of pet water fountains, which circulate and filter water for dogs and cats. While they may seem like a bougie luxury, pet water fountains are an underutilized tool for pet health , according to veterinarians that HuffPost has previously interviewed.