re: German Shepherd questions

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I'm a vet and science diet hasn't paid me a god damn cent for my loans and that's what I feed my dog.

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The reason for that is hills has been around since 1890 and is the most researched and studied food on the market so your 1970's info is wrong

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While the controversy continued on dog nutrition, new forms of packaged dog foods were appearing on the market. The depression in the 1930’s also prompted dog owners to look for less expensive methods to feed their pets. Less raw meat was fed, and more grains and cereal products were introduced in home diets. Canned meat products were introduced in the 1940’s and in 1943, dehydrated dog food was introduced, with the instructions of ‘just add water’.

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The sales of dry processed dog foods picked up considerably after World War II. Mill operators and grain dealers were finding a good source for their by-products in the dog industry. Slaughterhouses were also available to sell non-human grade, diseased meats, unusable parts, and meat by-products to pet food manufacturers. This created a market for products that previously had been discarded. Since many of these meat sources were non-human grade, the practice became common to mix these with the grains and cook them together for many hours or days to kill bacteria and disease. The final mix was then formed into pellets that were easily bagged for convenience of feeding.

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