I hadn't heard all these explanations. What about the otter? Everybody is focusing on the duck and rabbit but there was an otter in the story as well- he did get the duck.
I kind of took it to be that a group had trained him to kill the infidels and this group as represented by the story would be the otter. The otter does it the right way, he's sneaky and gets away with it. The rabbit screws the pooch and gets caught.