Dewlap
A flap of loose skin hanging below the throat of many vertebrates, especially lizards. Used as a visual signal for territorial displays, mate attraction, and species recognition.
Biological Context
Male anole lizards have brightly colored dewlaps (throat fans) that they extend during territorial and courtship displays. Dewlap colors have evolved to contrast maximally with the background where each species displays - forest species often have red or orange dewlaps that stand out against green foliage, while species in open habitats may have blue or white dewlaps.
Business Application
Dewlaps exemplify the principle of signal conspicuousness - effective signals must contrast with their background. Brand colors, logos, and messaging should be designed to stand out in the specific competitive environment where they will be displayed.