body
| body weight in kg |
brain
| brain weight in g |
name
| Common name of species. Rock hyrax-a = Heterohyrax brucci. Rock hyrax-b = Procavia habessinica. |
Selected from: Allison, T. and Cicchetti, D. V. (1976) Sleep in mammals: ecological and constitutional correlates. Science 194, 732-734.