Key points are not available for this paper at this time.
There is no empirical evidence for the claim that basal or active daily metabolic rates contribute to taxonomic variation in mammalian or eutherian life histories when body-size effects are controlled for. There is also no empirical evidence for the claim that dietary differences contribute to taxonomic variation in mammalian or eutherian metabolic rates when bodysize effects are controlled for.
Harvey et al. (Mon,) studied this question.