Ren, DS2 was in the 10th percentile for weight and the 75th for height when he was around 15 months. The MCHN wasn't the slightest bit concerned. He is a great eater, and very active. It is obvious he is just a tall and skinny build and burns food off quickly. He is probably still mis-matched now but I see now reason to weigh him. All that achieved last time was to worry me unnecessarily.