A Shark Cartilage supplement to support joint and connective tissue functions for dogs and cats.* In addition to providing nutritional support for healthy joints, Shark Cartilage supports bone density and is an efficient source of Calcium and Phosphorus.* 100 mg Pure Shark Cartilage powder. Each 1/4 teaspoon provides .85 grams of pure Shark Cartilage. 100% Shark Cartilage. As a dietary supplement, give 1/4 level teaspoon per 10 lbs of body weight, mixed in with food. Round up to the nearest 10 pounds.