The okapi is a mammal native to the Ituri Rainforest, located in the northeast of the Democratic Republic of the Congo, in Central Africa. Although the okapi bears striped markings similar to zebra, it is most closely related to the giraffe.
Prairie dogs are named for their habitat and warning call, which sounds similar to a dog's bark. The name was in use at least as early as 1774.The 1804 journals of the Lewis and Clark Expedition note that in September 1804, they "discovered a Village of an animal the French call the Prairie Dog." Its genus, Cynomys, derives from the Greek for "dog mouse".