The L.A. Zoo houses 1,400 animals across 270 species, and those critters rely on all facets of the zoo’s support system. Through these behind-the-scenes tours (each one tackles two locations in 90 minutes), the Griffith Park institution shines a light on those programs, including its medical facilities, food storage systems, habitat design and conservation efforts. Offered on Saturdays and Sundays, this revolving selection of tours is a good fit for any visitor seeking to experience to view the zoo from the other side of the fences. While you won’t find hands-on animal encounters aboard these, you will get pretty close to some critters.