(IMAGE) Instituto Gulbenkian de Ciencia Caption An ambitious ant carries a large piece of cut grass back to the nest. Worker ants grow specialized hypertrophied neck-muscles during development that allow them to lift and carry objects many times their own weight. Queens, which are otherwise genetically similar, do not have this adaptation Credit Alex Wild, <a target="_blank" href="http://www.alexanderwild.com">http://www.alexanderwild.com</a> Usage Restrictions The use of this image is only allowed when credits to Alex Wild are given. 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.