Feeding your German Shepherd​
I am shocked when I see people spend on a quality dog and then feed them dog food off a walmart shelve. Nutrition is very important if you want your dog to live a healthy and long life. 

Our puppies are fed raw and Proplan sport 30/20  2x a day
We feed our dogs a raw/kibble diet, for our adults that aren't pregnant or nursing they get feed once a day.
-Proplan sport 30/20
-raw egg
-1 chicken quarter
-Tripe
-yogurt (every 2 days)
-Cow/chicken liver (every 2 days)
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I do recommend an all raw diet but before you jump for all raw make sure you research. If you are looking for already blended with organ/meat/bone ratios I do recommend...
Texas tripe
Natures Variety --not many of the products
Vital Essentials
If you can't do raw the next best thing is dehydrated food
ziwi peak
honest kitchen
If kibble is the way you want to go, I recommend;
Proplan Sport 30/20
Sportdog food (Cub bag)
Bil Jac...frozen is the best
Victor high energy 24/20
Natures Variety
Wellness dog food
Solid gold
A puppy needs to grow at a steady slow, natural pace.