I suppose it's a bit like humans being middle aged we don't like to think we've reach it!
Thanks Susanne, he already get low carb food, he eats applaws or purizon which are mainly meat with veg. The treats are quite high in carbs and he gets about 15 a day so think that is too many. He doesn't like the pure meat treats either.
He is indoor only and will only eat dry food, I understand this is a bad combination for weight gain.