Allen's rule is an ecogeographical rule which states that the limbs, ears and other appendages of animals living in colder climate are shorter than the animals of same species living in warmer regions.
What does Bergmann's rule say?
Bergmann's Rule, in zoology, principle correlating external temperature and the ratio of body surface to weight in warm-blooded animals. Birds and mammals in cold regions have been observed to be bulkier than individuals of the same species in warm regions.
Does Bergmann's rule apply to humans?
It is widely accepted that modern humans conform to Bergmann's rule, which holds that body size in endothermic species will increase as temperature decreases. ... Thus, our study suggests that modern humans do conform to Bergmann's rule but only when there are major differences in latitude and temperature among groups.
Why do animals get bigger in colder climates?
Animals living near colder climates are bigger in size because being heftier allows them several benefits like reducing body heat los
