My pet is 10 months old now and weighs approx 15kgs and he looks very skinny compared to his biological brother who weighs 18kgs. I feed approximately 1kg per day and he is still always hungry. His meals have good proportion of fibre, protein and carbs His energy levels is always so high. His stools are fine but they are bulky and passes 5-6 times in a day. It looks like he is not absorbing any nutrients. Any suggestions if his feeding qty is fine? Or how can I help him gain some weight? His deworming is done timely.