World of Primates – This was my favourite part of the Houston Zoo when I visited in August, and it is reminiscent of San Diego Zoo’s “Monkey Trails & Forest Tales” as there is a long, elevated boardwalk that takes visitors through a lush forest of mainly netted primate exhibits. There are 18 primate species plus a few "intruders": golden lion tamarin, pied tamarin, cotton-top tamarin, siamang, agile gibbon, Coquerel’s sifaka, ring-tailed lemur, red-crowned lemur, red-fronted lemur, mandrill, DeBrazza monkey, patas monkey, black howler monkey, red-capped mangabey, red-tailed guenon, Allen’s swamp monkey, babirusa (out of place!) and an island enclosure with yellow-headed temple turtles, Malaysian giant turtles and Bornean, Sumatran and hybrid orangutans.