If this trend continues into the future researchers warn, the largest terrestrial mammal in 200 years will be the domestic cow. (sciencedaily.com)
If the current trend continues, terrestrial mammal body sizes will become smaller than they have been over the past 45 million years. (science.sciencemag.org)
There are no obvious structural reasons why terrestrial mammals could not be as large as the giant dinosaurs, so other factors must be at work. (discovermagazine.com)