Ideal for ELLs. Join Buddy, every first-grader’s favorite Weekly Reader pal, as he goes behind the scenes at interesting real-life places where people do interesting real-life work. What Happens at a Zoo?/?Que pasa en un zoologico? takes readers inside a real zoo to see the many people who work there–from zookeepers who care for the animals to the guides who greet people. Bilingual Version.