DIY Eat Eggshell Powder | Modern Dog magazine
One of the most important supplements you''ll need to add to your dog'' meal is calcium. If dogs had the ability to chew on a good bone every day, they would be scraping off bits of bone that then would be broken down in the their body and used to strengthen their own bones and teeth. It''s the job of the parathyroid to regulate the amount of calcium and phosphorus in the blood.