While raw egg is not appropriate because of high risk in salmonella, eggshells are a great source of calcium for your pets. Calcium is needed for normal growth, strong bones, teeth, and claws, as well as for optimum muscle contraction. Using raw bones as a calcium source is the most common way to provide this vital nutrient to your pets. Raw bones can usually be fed whole though some people who prefer to feed ground up bones find it hard to get a hold of the equipment needed to grind the bones.
Eggshells however, present a healthy, balanced calcium source mainly due to some trace amounts of other minerals contained in the shells. There is a combination of 27 different mineral micro-elements in the eggshell and interestingly, the composition is very similar to those found in bones and teeth.
