It was the Thylacine, aka the Tasmanian Tiger. They are, alas, extinct (almost certainly, though every once in a while an alleged sighting happens).
My daughter didn’t think anyone would get this one, but I was reasonably certain someone would, and I was not wrong: Bryce got it about 14 minutes after I first posted.
So, Bryce: Send me an email from the address you post under (i.e., the email address you used to fill out the comment form), which contains your shipping address and the name you want the ARC personalized to (if any) and I will get it in the mail to you. And congratulations!
Everyone else: There’s always next time (and yes, there will be a next time. Probably).