Mammals
Common Shrew
Sorex araneus · also called common shrews, eurasian shrew
Racing through leaf litter in a near-constant hunt for its next meal, a common shrew burns through energy so quickly that going without food for even a few hours could kill it, a tiny mammal locked into one of the fastest-paced survival strategies in Europe.
Overview
The common shrew, Sorex araneus, is a small, extremely fast-metabolising insectivore native to grassland and forest habitat across most of Europe. Its need to eat close to its own body weight in food daily, remarkably short lifespan of little more than a year, and status as one of the most numerous yet rarely seen mammals in its range make it one of the most metabolically extreme small mammals found anywhere on the continent.
A life lived at full speed
Few mammals live as urgently as the common shrew, whose entire existence is shaped by an unforgiving metabolic clock that leaves almost no room for rest, forcing it to forage almost continuously just to stay alive.
Status
Least Concern, remaining widespread and abundant across suitable grassland and forest habitat throughout Europe.
Common Shrew: common questions
Why does the common shrew need to eat so much?
This species has an extremely high metabolic rate for its size, requiring it to eat close to its own body weight in food every single day, since its tiny body loses heat rapidly and burns through energy reserves far faster than larger mammals do.
What happens if a common shrew cannot find food?
This species can starve to death within just a few hours without food, a direct consequence of its extremely high metabolism, making constant, near-continuous foraging essential to its survival throughout both day and night.
How long does a common shrew live?
This species typically lives for little more than a year in the wild, an unusually short lifespan even among small mammals, reflecting the intense metabolic demands and risks that come with its fast-paced way of life.
Is the common shrew easy to see in the wild?
No, despite being considered one of the most numerous mammal species across much of its European range, this species is rarely seen due to its small size, secretive habits, and tendency to stay hidden within dense leaf litter and undergrowth.