Relative brain size and basal metabolic rate in terrestrial vertebrates.
D000818:Animals; D001717:Birds / Q000033:anatomy & histology; D001921:Brain / Q000033:anatomy & histology*; D008322:Mammals / Q000033:anatomy & histology; D008660:Metabolism; D009929:Organ Size; D012104:Reptiles / Q000033:anatomy & histology; D013499:Surface Properties