Was feeding my pets before continuing with my homework, and I noticed something weird with my numbers the moment I hit the button to feed the stable. Pulling the feeding menu up again gave me this:

...apparently I have a mystery pet in another stable? I should add, I have one stable total, and none of the pets there were hungry in the least. I have no idea what this is or why the game thinks I have another stable with another pet when I definitely do not.
Is this a regular bug, or is something wrong?
EDIT: Nevermind, there was a hungry pet in my hatchery. Ignore this. ':)