Jackalope:

The Jackalope was originally thought to be a rabbit with antlers. It is in fact a rabbit with the Shope papilloma virus. The Phylogenies of this species are of the Kingdom Animalia, the Phylum Chordata, the Class Mammalia, the Order Lagomorpha, and the Family Leporidae.

Status note: This ASP and all related reports of the original jackalope have been disproved and reclassified as creatures within the Phylogenetic Family of Leporidae with the Shope papilloma virus.