Just curious....when estimating the size of a puppy should you rely more on the weight or the height at the withers? I'm asking because my boy right now who just turned 4 months is weighing in at just under nine pounds which would put him very low on the scale as an adult but height wise he is close to 12.5 inches which I think indicates an oversized or top of the standard adult. He is incredibly leggy and light boned Any ideas or just wait and see? He's still on a breakfast lunch and dinner schedule so he's a nice weight right now for his build. really the only reason I'm interested is because I plan on running him in agility so I'd like to get an idea on his jump height as an adult.