Motor Skill Development: 10 to 18 months
| Average | Range | |
|---|---|---|
| Stands by itself | 11 months | 9 to 16 months |
| Walks alone | 11 months | 9 to 17 months |
| Tower of 2 cubs | 13 months | 10 to 19 months |
| Scribbles | 14 months | 10 to 21 months |
| Goes up stairs | 16 months | 12 to 23 months |