i adopted gino as an adult so i am not sure about his 8 week weight
bentley was my CHUB...he was over 1.5 lbs at 4 weeks and over 2 (maybe 2.2lbs) at 8 weeks...he is 14 months old and weighs 3.25lbs...i guess he grew fast and really slowed down
i am not sure about miss buffey but i think she was around 1lb 12 oz at 10 or 12 weeks and weighs exactly 3.5 lbs at 15 months
i also only had bigger dogs growing up and my last dog was a 90lb german shepherd lol so i understand what you are saying