Diesel was always a bigger pup although not heavy in any way he is more leggy - When we got riley he was short and stalky and when he was weighed 2 weeks ago at 4.5 months old he was about 7 kg
Diesel is 9 months old and is about 13.5kg
He was moving up a half kg every week between 5 and 6 months
They come in all shapees and sizes and there is not a specific wight they should be - so dont worry