at 14 weeks my girl was about 32 lbs...prediction based on that 32+32+16= 80 lbs... I don't really think this is accurate to be honest..Saw it somewhere in an old thread -- she's 18 months old now and at roughly 64ish lbs, been steady around there for many many months. Might be more accurate for other dogs though.
My female was at 68 pounds forever and is now 78 pounds. She filled out after she turned 2. I never thought she would get past 68.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD