We were talking about Christmas morning when I reminded the girls, "You know on Christmas morning we're going to have to let Oreo out before we open presents."
As I like to remind them daily, "You wanted a dog and having a dog changes a lot of things." They didn't realize having a dog meant they would have to wait before opening their presents.
The girls looked horrified for a moment before I reminded them that the first thing we do every morning is take out Oreo. Our yard does not have a fence, so we put him on his leash and walk him in the yard.
He gets a few minutes outside to make up for the hours he spends in the crate each night. It is really just a few minutes, but once the girls realized this would delay opening their presents, their eyes opened wide.
Of course, they do realize that Oreo's needs cannot wait until they are done opening their presents. They understand it in theory anyway. We'll see how Christmas morning really goes.