I think it will be really interesting to see how this poll turns out. I was at a pawspark this weekend and there were 3 boxers there right about Roxy age. They were all pretty small one only weighed 19lbs. I thought Roxy was small (she's almost 5months and 35lbs). They all looked liked different ages. I guessed every pup grows at its own pace.
Roxy- female/fawn/black mask w/white beard/docked & floppy/09-22-01
Ginger- female/Beagle/ginger and white/Roxy's chew toy/12-27-99
Alley- female/white kitty cat/hates all dogs/07-14-93