Cosmetic traits refer to the physical characteristics of an organism that are primarily related to appearance rather than function. These traits can include features such as fur color, eye shape, and skin texture. They often play a role in attracting mates or signaling health and vitality. In many species, cosmetic traits can be influenced by genetic factors and environmental conditions. For example, the vibrant colors of peacock feathers are a cosmetic trait that helps attract females during mating displays. These traits can also vary widely within a species, contributing to diversity and adaptation in different habitats.