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. 2014 Sep 14;14:194. doi: 10.1186/s12862-014-0194-z

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© Jackson et al.; licensee BioMed Central Ltd 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Plots of (A) gestation duration, (B) lactation duration, and (C) total development time vs adult body mass for 457 mammalian species. Durations in days. Body masses in grams. Each point represents a species mean. Note log-transformed axes. Regression lines are the phylogenetically-controlled best fit lines calculated using PGLS.