He was already a very good crawler by that point but did little else. The day he turned 10 months old, he discovered he liked to climb. He found an apparatus at Gymboree that enabled him to climb about four and a half feet off the ground and he did so on that very first day!
The teachers were shocked to see one so small climb so high. Now he's 17 months and climbs that, and everything else, like it's no body's business.
I'm sure all of that climbing built up his muscles to help him finally start walking (first steps just shy of 15 months, actual walking at 16 months) and now, he's practically running!
Class Type: Play & Learn 4 (16-22 months)