In thru the Dog door

So the weekend before this last one we were at some friends house, so that David could help him fix his pool.
They have a dog, and a doggie door as well. So do you see where this is going, lol!
Well, Madeline discovered the doggie door! She saw the dog go thru, and I suppose she thought hey that looks like fun, because down on the ground she was, and thru the door!
She had so much fun going in and out of that thing!
Here are a few photos of her adventure:

we had to go back the next day, and first thing she did when we got there was head to that doggie door.