Graphical abstract of the research. (IMAGE) Univerzita Karlova Prirodovedecka fakulta Caption The numbers refer to increases compared to reptiles and the thermometers indicate endothermy. Credit Kristina Kverková Usage Restrictions CC BY 4.0 License Original 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.