My 6-month-old puppy is thin and won't eat. How can he gain weight?
Most puppies should be proper weight if they are getting fed puppy food, and in his case large breed puppy food. If you are concerned about his weight, then I would recommend getting him checked to ensure he isn't losing nutrition due to intestinal parasites, which is the #`1 cause for weight loss in puppies. Otherwise, he may just be naturally lean. I can see his ribs there but he is laying down, if he stands and his ribs are still readily pronounced, then he may be a tad bit underweight.
Also if he has any loose stool, this can indicate other internal organ issues that should be checked by your vet. If he has an underlying issue that is not treated, then no matter what you feed him, he will continue to be undersized.
I hope that things work out well for your pet Thunder and that his weight normalizes soon! Best wishes and take care.
Updated on September 23rd, 2025