Elmore Leonard is writing his next novel for teens. His new book, A Coyote’s in the House, assumes “a coyote-eat-cat reality.” Leonard decided upon this formula after concluding that Madonna’s “cat-eat-coyote fantasy,” Jay Leno’s “cat-eat-dog quasi-reality” and Billy Crystal’s “ants-eat-anteater delusion” weren’t premises that could sustain the attention spans of young readers.