Jackalope

 is animal found in Red Dead Redemption.

The Jackalope is a mythical animal of North American folklore (a so-called "fearsome critter") described as a jackrabbit with antelope horns or deer antlers and sometimes a pheasant's tail (and often hind legs). The word Jackalope is a portmanteau of "jackrabbit" and "antalope", an archaic spelling of antelope. It is possible that the tales of Jackalopes were inspired by sightings of rabbits infected with the Shope papilloma virus, which causes the growth of horn- and antler-like tumors in various places on the rabbit's head and body.

Characteristics
The Jackalope is a new animal featured in Redemption. The player needs to kill one of these animals in order to unlock the Expert Hunter Outfit.

Trivia

 * The Jackalope looks like a mix of a Rabbit and a Buck. When skinned, it generates Buck Antlers and Rabbit Meat.
 * The Jackalope uses an accelerated version of the rabbits running animation.