Lemurs are a unique primate that has attracted much attention due to their unique physiological characteristics and social behaviors. In biological and psychological research, the lemur model is widely used to study neuroscience, behavioral ecology, and the evolution of human behavior.

Lemurs belong to a group of primitive primates whose common ancestor with humans dates back tens of millions of years. They have large eyes and good night vision, which allows them to effectively catch prey and avoid predators when they are active at night. Such physiological adaptations make lemurs an important window into how ancient primates survived and thrived through natural selection.

In terms of social behavior, lemurs are known for being highly social. They usually live in small family groups with well-defined social hierarchies within the group. This social structure provides an ideal model for studying social behavior and interactions between individuals. Studies have shown that lemurs communicate in a variety of ways, including vocalizations, body language and scent markers. By observing the social behavior of lemurs, scientists can gain insight into fundamental social dynamics such as social networks, cooperation and competition, and these studies have important implications for understanding the origins of human social behavior.

In particular, studies of lemurs' cognitive and learning abilities shed light on how primates process complex information and make decisions. Recent studies have shown that lemurs can demonstrate problem-solving and tool use in experiments, which provides important clues to our understanding of the evolution of primate intelligence.