lol I saw the top picture and thought "thats not thin, looks exactly like Happy" lol then I saw the side picture, yup definatly need to gain a few pound, just make sure he does not gain too much he appears to have a very narrow frame and slender legs so I doubt he would be able to properly support to much extra weight lol just judge by his ribs not by his waistline as he appears to have the same typ of build as Happy, so the waist should always be very prominent just make sure the rubs are not lol he is so cute! good luck with him!