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Earth's land Mammals by weight
(imgs.xkcd.com)
A place to share and discuss data visualizations. #dataviz
There are probably some somewhere, but yeah not many. However the ones that are bred for food typically weigh more.
Hell, if you let a meat chicken grow beyond its sell-by date, there's a good chance it will develop so much muscle mass it cannot stand up anymore, and it will rot to death on the spot.