Name that skull

So a few weeks ago we came across this skull.  It was in the middle of a cleared pathway to the creek with nothing else around it.  It's strange placement has us puzzled and we've been making some pretty interesting guesses on what it is & how it got there.

Anyone have a guess on what it is?

Guesses so far include:
Avery - cow
Tate - goat
Beckett - giraffe
Pierce - minotaur (really?)