Jackalope

Appearance
The word 'Jackalope' is a portmanteau of the two words jackrabbit and antelope. Therefore a Jackalope is a mythical creature that is a jackrabbit, except it has two antlers on the top of its head. They are native to Western North America.

Origins
There are many different stories of animal hybrids from all over the world. Some stories including a creature similar to the Jackalope. A 13th-century Persian work describes the Al-mi'raj, a rabbit with a single horn, like the horn of a unicorn. Another similar creature is the Wolpertinger. In Central America, referenced to the horned rabbit can also be found in the legends of the Huichol people. Also the rabbit and the deer were paired together (not as a hybrid) to represent the day time in the Aztec calender. Many people used to believe that such a creature actually existed, but by the 18th century, scientists rejected the idea of horned rabbits being a biological species.

Other Explanations
The Shope papilloma virus could be a possible explanation to the Jackalope, as the disease causes horn/antler like tumors to grow on the rabbit's head and body, as shown on the right.