To me his weight and age seem perfectly normal and healthy.
Some generalisations on a male GSD growth are between 12-20 weeks on average are gaining up to 2.2-2.75 lb max per week, between 20-26 weeks, gaining 1.65-2.2 lb max per week and between 26-35 weeks gaining 1.1-1.65 lb per week. Male GSD’s largely stop growing in height by 9 months and may gain an extra 1cm (maximum) in height by 15 months. Adult male 18 months average weight range is 70-83 lb with average being 79 lb, and male full grown 3-4 years average weight range 79-88 lb with average 83 lb.
It is best to grow them slowly for health reasons and if your dog is not predisposition to be large then by feeding him to much will just turn him into obese.
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.