The term 'Camel Cousin' refers to four animals related to the camel, which are the ALPACA (6 letters), LLAMA (5 letters), TAN (3 letters), and GUANACO (7 letters). The ALPACA is a domesticated species of South American camelid, while the LLAMA is also a domesticated species of South American camelid. The TAN is a wild species of South American camelid, and the GUANACO is a wild species of Central and South American camelid. All of these animals are adapted to living in arid environments, such as an OASIS (5 letters).