Watching a pair of nuthatches build a nest in a tree at eye-level from my bedroom window and then watching them raise the four little ones when I was three or four. Apparantly I also used to have tea parties with the garter snakes on the back porch around the same time period. Then there was being allowed to stay up late and watch National Geographic and Jacques Cousteau specials...Catching tadpoles in my grandma Millie's frog pond and keeping them until they turned into frogs at the age of eight. You get the picture.