ideal weight

Question
my 4 month old  male yelow lab's weight is now 11 kg, is it right for him. if not plz give me some suggetion for feeding.

Answer
There is no "normal" as long as the dog looks healthy.  24 pounds is a bit on the lighter side, but if his pedigree is from smaller dogs, it's on target.

I would use the instructions on the bag of food as a guideline, and if you think the dog is too skinny, up it from there.