Small-minded? Shrews shrink their skulls to outlive winter, examine exhibits

The animals scale back the scale of their brains and skulls as winter approaches and regrow them within the spring, say researchers

They use echolocation to discover their habitat and produce an disagreeable scent to keep away from being eaten by cats. However the widespread shrew has one other survival trick: as winter approaches, its cranium shrinks after which regrows within the spring.

Dubbed “Dehnel’s phenomenon” after the scientist who first noticed the impact, the shrinkage has beforehand been studied by trying on the skulls of shrews that died at completely different instances of 12 months.

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