Many ingredients used in dog and cat foods contain reasonable amounts of magnesium. The best sources include '''meat meals, meat and bone meals, cereal products and soybean meal'''. There are also a number of magnesium salts used as supplemental sources, including oxide, sulphate, carbonate and chloride. Ground limestone also contains magnesium and if used as a source of calcium will normally also supply sufficient magnesium for nutritional requirements. | Many ingredients used in dog and cat foods contain reasonable amounts of magnesium. The best sources include '''meat meals, meat and bone meals, cereal products and soybean meal'''. There are also a number of magnesium salts used as supplemental sources, including oxide, sulphate, carbonate and chloride. Ground limestone also contains magnesium and if used as a source of calcium will normally also supply sufficient magnesium for nutritional requirements. |