We’ve been adding egg shells to our dogs food and the garden for years. Here’s why? 🐶 Benefits of eggs shells in dog food. 1. Calcium Source • Eggshells are rich in calcium carbonate, which helps support bone strength, teeth, muscle function, and nerve signaling. • Dogs on homemade or raw diets often need extra calcium to balance out phosphorus from meat. Without enough calcium, they can develop weak bones or skeletal issues. 2. Joint & Bone Health • Eggshell membrane (the thin layer inside the