Do the "Terrible Twos" start at 15 months?

While always extremely cute, Henry and Nathan are definitely entering toddlerhood. They have dramatic meltdowns and collapse on the floor at the slightest offense. They have baby fights on a regular basis. And they test their boundaries daily. On the flip side, when they play together it's the cutest thing I've ever seen. They have also learned to eat cereal with milk out of a bowl with a spoon (thank you ELC). And they can walk in the snow in big boots. Here are some shots from the last couple weeks in Anchorage.

Henry practices walking in his snow boots while snacking on Cheerios:

Nathan has a tantrum on the floor; no one knows why:
Riding on their new sleds:
Checking out a moose that was blocking our way:
Playing in a tupperware bin:
Not sure what these expressions are all about:
Henry and his sweet Pooh Bear ride:
Nathan pushes Henry on the Pooh Bear car (one of the cutest things I've ever seen):