Poison Frog Chronogram (IMAGE) National Evolutionary Synthesis Center (NESCent) Caption This chronogram illustrates the diversity of mating calls based on species toxicity, visibility, call location and body size. Credit Juan C. Santos Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.