Little ones are very good climbers. The big one has her chocolate and other snacks on the top shelf of the pantry and hasn't yet figured out that the little one can just climb up the pantry shelves like a monkey to get it. There's not many safe places in this house you can stash snacks these days.

When the big one was 2 I had an electrician in and she was all set to follow him up his ladder into the ceiling ... ladders are even worse than stairs