All of these weight questions made me try to remember the size of my babies. I couldn't so I got out their records. I keep sort of a baby book on them and record their weight about every month or so. I take them to Petsmart and weigh them on the scales in the vet area. They have learned to sit on the scales now with no treats. It was a hassle when we first started weighing them. Mac was neutered at 4 months and weighed 43 lbs at that time. He is huge, his paws are as big as my hands. Jazz is probably a normal size Boxer but looks small next to FatBoy! And, he is not really fat, just large boned.
MAC
1 month 4 lbs 1 oz
3 months 32 lbs 2 oz
6 months 58 lbs 12 oz
JAZZ
1 month 3 lbs
3 months 23 lbs 4 oz
6 months 47 lbs 3 oz