The spotted multi-horned sheep in the movie are a threatened species known as Jacob Sheep, believed to originate in Biblical times.
Stanley Tucci was cast to play the Biblical character Noah. After Evan Almighty (2007) failed at the box-office, Noah was cut from the film.
Harold Ramis: as Adam.
Final film directed by Harold Ramis. It's also his last acting role.
Paul Rudd: as Abel.