Table 1.

Variation in adult body mass, lifespan, somatic mutation rate and end-of-lifespan mutation burden across the 16 mammalian species surveyed

Variable	Minimum	Maximum	Fold variation
Adult mass (g)	20.50	800,000.00	39,024.39
Lifespan (years)	2.75	83.67	30.44
Mutation rate per year (substitutions per genome)	47.12	796.42	16.90
End-of-lifespan burden (substitutions per genome)	1,828.08	5,378.73	2.94

Species-level estimates are provided in Supplementary Tables 3 and 6.