Caribou's cousin is the MOOSE, ELK, and REINDEER. The MOOSE is a large deer-like mammal native to North America, Europe, and Asia. It has long legs, a humped back, and antlers that can reach up to 6 feet in width. The ELK is a species of deer native to North America and Eurasia. It is the second largest deer species after the MOOSE and is characterized by its large antlers and dark brown fur. REINDEER, also known as caribou, are a species of deer native to the Arctic and Subarctic regions of Europe, Asia, and North America. They are well-known for their thick fur coats and antlers, which can reach up to 4 feet in width. All three animals are closely related and are considered to be Caribou's cousins.