German Shepherd puppies have to be fed special food. Wet food should be introduced as a way to make the transition from the mother’s milk to regular food. This transition period is crucial as it helps the pet’s digestive system prepare for the whole food that you are going to feed it later on.Then, it is advisable that you gradually switch the puppy from wet to dry food. At six months you can introduce animal products into the pup’s diet such as bones or liver. At one year of age, the dog will probably start eating less food than it did when it was a puppy, and this happens because its metabolism starts slowing down. Now, it is time to feed the pet once a day, instead of twice or three times. This is the point when you can introduce adult food into its diet.