I remember a few years ago I borrowed a little baby goat for a day to see if I'd like to add a goat to my little farm menagerie, and how other animals would get along with it. After a while I couldn't find Fat Girl. I looked and looked and later found her in the woods busily building a nest of leaves and twigs. There was no way she was pregnant at the time, so I could only think her motherly instinct clicked in and she was making a nice nest for the little baby goat. She kept with it and didn't abandon that nest for days even thought I decided to return the goat that same day.
I don't think I'm gonna stop missing her.