My humble advice - grow him slowly - don't over or under feed, don't over exercise him, socialise when young with appropriate stable dogs - give him good experiences, build his confidence by introducing him to new things. Enjoy him.
PS imo dog parks are usually not good for GSDs from about 1yo, however they can be good for young immunized pups when there are other pups around the same age to rumble and run with and/or other very stable dogs to teach them manners.
if your GSD is eating and eating and eating and losing weight - please consider testing for EPI.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.