Environmental and Biological Determinants of Brain Mass

According to the expensive brain hypothesis, periodic energy level determines mass. However, various environmental and biological factors directly or indirectly relevant intake have not been well studied. Here, we systematically examined how body mass, hibernation, diurnally, substrate use, diet individually synergistically determine mass in a large dataset of more than 1000 species. We found that hibernation are major determinants most These findings will shed light on future studies evolutionary constraints acting size.