Category Body Deflation,

Salmons Too

Most of us presume growth of body length in vertebrates to be unidirectional, with organisms progressively increasing in body size as they become older. However, under challenging environmental conditions for some vertebrates body length shrinkage is also possible. This ability is called the Dehnel phenomenon. Small mammals, such as insectivorous shrews, show body length shrinkage […]

The Dehnel Phenomenon

The Dehnel phenomenon, named after its discoverer, Polish zoologist August Dehnel, is the ability of certain species of animals such as shrews and weasels to shrink skull, bones and major organs in order to survive scarce food situations. Interestingly, they shrink in anticipation, before the actual scarcity arrives, unlike the Marine iguana of the Galapagos […]