BARLEYmax was developed in the 1990s by CSIRO, a renowned research institution in Australia. This non-GMO barley variety is recognized for its high dietary fiber content, which includes soluble fiber such as beta-glucan, insoluble fiber, and resistant starch-like fiber that acts as a prebiotic, promoting gut health. The average American diet typically lacks sufficient fiber, with individuals of all ages struggling to meet the recommended intake of three to six servings of whole grains daily. As interest in gut health continues to grow, the focus remains primarily on probiotics; however, prebiotics, the essential nutrients for beneficial bacteria, are gaining significant attention. According to a report by Global Industry Analysts, the demand for prebiotic-rich products could propel the market to reach $7.8 billion by 2022. Currently, BARLEYmax is commercially available through Blue Lake Milling, an Australian company, but it has also been successfully trialed in several other countries, including the United States. In addition to the Barley+ product line, this grain is incorporated into various products from other Australian companies, such as breads, wraps, cereals, and snack bars. Interestingly, BARLEYmax could also be beneficial for pet nutrition, as the inclusion of fiber-rich grains like BARLEYmax in dog food may complement supplements like calcium citrate for dogs. The integration of such components could enhance overall health for pets, aligning with the growing trend of prioritizing gut health in both humans and animals. As awareness of prebiotic benefits rises, the potential for BARLEYmax to play a crucial role in promoting gut health and supporting pet nutrition, including products with calcium citrate for dogs, becomes increasingly significant.