Damn Bro are you a Breeder, Them some nice looking Bulls, I have 2 Bull mastiff + a English Bulldog, are u giving the Vitamins ?
I have been using NuVet Plus for about 2 years, the boys sure did turn out nice, the breeder that I bought my two Bulls-mastiffs from is using it on all of her Bulls...;)
http://www.nuvet.com/index.html
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NuVet Plus®
Canine formula contains: Blue Green Algae, Brewer’s Yeast, Cat’s Claw, Evening Primrose Oil, Shark Cartilage, Oyster Shell, Alpha Amylase, Beta Carotene, Pine Bark, Papain, L Methionine, Alfalfa, Chicken Liver, Vitamin B1 (Thiamin), Vitamin B2 (Riboflavin), Vitamin B3 (Niacin), Vitamin B5 (Pantothenic Acid), Vitamin B6 (Pyridoxine), Vitamin B12, Vitamin D, Vitamin K, Manganese, Magnesium, Iron, Copper, Amino Acids (Tryptophan, Threonine, Isoleucine, Leucine, Lysine, Methionine, Cystine, Phenylalanine, Tyrosine, Valine, Arginine, Histidine, Alanine, Aspartic Acid, Glutamic Acid, Glycine).
Vitamins:
Vitamin A (from beta-carotene) 1000 IU
Vitamin E 50 IU
Vitamin C 50 mg
Minerals:
Phosphorus 83 mg
Potassium 50 mg
Zinc 10 mg
Calcium 100 mg
Selenium 350 mcg