Answer
Nov 03, 2025 - 08:56 AM
Calcium should be provided to a dog between a 1:1 and 2:1 ratio of calcium to phosphorus. Generally, the optimal is a little more calcium to phosphorus in a 1.2:1 ratio. The reason for the importance of this calcium to phosphorus balance is the development and maintenance of a healthy skeletal system in our canine companions. A deficiency in calcium or an excess in phosphorus can lead to issues like bone deformation and pain, particularly in puppies. Too much calcium can also cause problems, including skeletal malformations and mineralization of other tissue like blood vessels and organs. In commercial, prepared pet food diets the correct mineral balance is already accomplished by the manufacturer of the diet. For homemade diets, instructions are provided for correct usage of a calcium supplement under the Instructions tab on each product page. If feeding raw, meaty bones, nature has created the balance for you. It is important to keep in mind that the ratio of calcium to phosphorus does not have to be exact, just in a certain range. And, it is best to provide a calcium supplement with a full range of supporting minerals, like magnesium and trace elements, not an isolated calcium supplement.
