Psie liczby is an informational website that helps dog owners estimate the cost of feeding a dog. Its calculator lets users enter a dog’s weight and compare dry, wet, and cooked food, with estimated daily, monthly, and annual costs. The site presents product examples from John Dog and PsiBufet, including dry and wet John Dog recipes and PsiBufet’s cooked meals delivered through a subscription. Listings show package sizes, prices, suggested daily portions, and the date prices were checked, helping visitors compare options based on their dog’s weight.

For a 20 kg dog, the site reports estimated daily costs starting at 2.64 zł for selected John Dog dry food, 9.40 zł for several wet foods, and 10.19 zł for PsiBufet cooked food; delivery is excluded. It also notes a promotional introductory price for new PsiBufet customers. Psie liczby explains its calculations, labels advertising and affiliate links, and cautions that its estimates are not veterinary advice.