BEGIN SLIDESHOW New Smallfoot trailer has big, big laughs Warner Animation Group has released a new trailer for their animated film Smallfoot, coming to theaters on September 28. Check out the new Smallfoot trailer below and view the new poster underneath! An animated adventure for all ages, with original music and an all-star cast, Smallfoot turns the Bigfoot legend upside down when a bright young Yeti finds something he thought didn’t exist—a human. News of this “smallfoot” brings him fame and a chance with the girl of his dreams.