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Purina's labeling of one type of food as Hi Pro (ostensibly conveying the image of an upper level of protein) is very questionable. The data showing that excess protein causes renal damage are imaginative extrapolations of results derived from test animals that have renal deficits pre-existing and who are then fed levels of protein that induce uremic poisoning. Early studies that pronounced protein as harmful to dog kidneys were based on studies done on RATS! They weren't even done on dogs, and that research drove the pet food industry for years. As it turns out, there are major differences in how the rat kidney (is a rat a meat eater, anyway?)
8O Sneaky, sneaky!
 
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