In answer to yesterday's post, no, it is not a mule.
This is a mule:
Here's a hint. This picture was taken seconds after the one in question:
Now do you know?
If you still can't get it, it is, (or rather, she is):
Our pretty, curious, and normally not at all mule-like-looking, little pony. :)
Thanks Lizzy, for capturing the cute picture and thanks you guys, for guessing along!