The Jackalope (also known as "The Great American Jackalope") is a character in the short film Boundin'. When a lamb has been sheared and becomes upset over the loss of his wool coat, the jackalope sings a song that teaches the Lamb to bounce back from life's troubles. After encouraging the lamb with his song, he travels back to America.
The Jackalope appears on the back of Bud, a van from Cars. Unlike many other "animals" in the Cars world, he is not car-ified.