Goats can't open doors

The past few nights, I have demanded to sleep in mommy's bed with her. I crawl under the covers and demand to hold mommy's hand. Then I realize that the bedroom door is still open and I ask her to close it. I have good reason for this request, too: goats can't open doors. Just as I was very concerned about cows coming in the house, I am now concerned that goats will come in. Here's how the conversation goes:

"Mama, goat come?"
"No baby, the door is closed."
"Goat open door no."
"That's right baby, goats can't open doors."
"Dada open door."
"Yes. Dada can open the door."
"Okay. Dada come. Night-night!"

Of course, this conversation repeats itself about 50 times each night, but it's just like this each time.