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A new study - analyzing 70 years of records on the  North American deer mouse- tests the Bergmann’s Rule which says species tend to be larger in cold climates and smaller in warm ones. #DeerMice Climate Change, Mammals, North American, Deer, Species, Rabbit, Wildlife, Mouse, Creatures
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floridamuseum.ufl.edu

Mice are shrinking, but are climate change and cities to blame?

According to a well-studied but controversial principle known as Bergmann’s Rule, species tend to be larger in cold climates and smaller in warm ones. As human impacts heat the… 
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