Catherine has started saying, "hi" and waving with gusto at every noise she hears and everything she sees.
The other day at the park, she waved at all of the children getting off the school bus. She waves at honking cars, at fire trucks with sirens blaring, at dogs barking.
Today, while playing outside, three crows perched high up in a tree in our backyard and began cawing. She got so excited. She looked up as high as she could, waved her whole arm, and shouted, "hiiiii!"
I certainly hope this friendliness carries her through life.