Laid out in a Victorian pleasure garden, the footpaths around Philadelphia zoo ramble past more than 1 300 animals from around the globe. Be sure to see the Amur leopards, which are classed as a Critically Endangered species, the Primate Reserve and the Rare Animal Conservation Center. KidZooU is a new area, offering children the chance to get better acquainted with frogs, goats, pigeons and other familiar animals.