Stair climbing? What's the big deal? They are 14 months and only now climbing stairs?
The big deal is that as of yesterday Andrew had not climbed one stair. He was not interested in climbing the stairs at all. He was content to play on the first stair and go no further.
Mallory would get on the first step and sit there and do nothing. We hadn't put a gate at the bottom of the stairs cause they weren't interested.
This morning I was getting ready and I heard them playing in another room. I went to check on them and they were both almost to the top of the stairs.
Yesterday - not one stair. Today - the top of the stairs.