an owl named Flaco, gained attention in 2023 when he escaped from the Central Park Zoo after his enclosure was vandalized. More infamously, Eugene Schieffelin released 100 imported European starlings in Central Park in 1890–1891, which led to them becoming an invasive species across North America. Central Park has approximately ten species of mammals . Bats, a nocturnal order, have been found in dark crevices. Because of the prevalence of raccoons, the Parks Department posts rabies advisories. Eastern gray squirrels, Eastern chipmunks, and Virginia opossums inhabit the park. There are 223 invertebrate species in Central Park. Nannarrup hoffmani, a centipede species discovered in Central Park in 2002, is one of the smallest centipedes in the world at about long. The more prevalent Asian long-horned beetle is an invasive species that has infected trees in Long Island and Manhattan, including in Central Park. Turtles, fish, and frogs live in Central Park. There are five turtle species: red-eared sliders, snapping turtles, painted turtles, musk turtles, and box turtles. Most of the turtles live in Turtle Pond, and many of these are former pets that were released into the park. The fish are scattered more widely, but they include several freshwater species, such as the snakehead, an invasive species. Catch and release fishing is allowed in the Lake, Pond, and Harlem Meer. Central Park is a habitat for two amphibian species: the American bullfrog and the green frog. The park contained snakes in the late 19th century, though Marie Winn, who wrote about wildlife in Central Park, said in a 2008 interview that the snakes had died off. Landmarks and structures Plazas and entrances Central Park is surrounded by a , stone wall. It initially contained 18 unnamed gates. In April 1862, the Central Park commissioners adopted a proposal to name each gate with "the vocations to which this city owes its metropolitan character", such as miners, scholars, artists, or hunters. The park grew to contain 20 named gates, four of which are accessed from plazas at each corner of the park. Columbus Circle is a circular plaza at the southwestern corner, at the junction of Central Park West/Eighth Avenue, Broadway, and 59th Street (Central Park South). Built in the 1860s, it contains the Merchant's Gate entrance to the park., and its largest feature is the 1892 Columbus Monument and was the subject of controversies in the 2010s. The 1913 USS Maine National