What do you think this is?

Sam and I were killing giant spiders in Mirkwood when I heard a funny crunching sound. We cleared the nest and then went to investigate. In the past I've heard that same crunching and then found a turtle, so naturally I assumed that that was what we'd find. That or a snake...
But I was wrong on  both counts, it was neither a turtle or a snake; looks kind of like a big hedgehog to me (or a breathing pincushion).
What do you think it is?