The term 'Primates with Tails' refers to a group of primates that have tails, such as lemurs. Lemurs are a type of primate that are native to the island of Madagascar and are known for their large eyes, long tails, and playful behavior. They are also the most endangered of all primates, with some species facing extinction due to habitat loss and hunting. Lemurs are classified as prosimians, which means they are more primitive than other primates, such as monkeys and apes.