[Cardinal Rule]

An interesting point to note about the jackalope is that the legend (assuming there never really was such a 'truly' antlered rabbit) likely stemmed from a disease contracted by rabbits that spurs bone-like growth around their heads looking in some cases like antlers. IIRC this disease eventually winds up killing the rabbit. I don't remember what it's called now, but some turned up in rural Nebraska not long ago and they had an article in the paper about it. So now you know one more bit of useless knowledge...