Nocturnal primates are a type of mammal that are active at night and sleep during the day. Two examples of nocturnal primates are lemurs and lorises. Lemurs are native to the island of Madagascar and have long, bushy tails and large eyes. Lorises are found in tropical regions of Africa and Asia and have slow, deliberate movements. Both lemurs and lorises are nocturnal primates that have adapted to their environment in order to survive.