The Eurasian pygmy shrew (Sorex minutus), often known simply as the pygmy shrew, is a widespread shrew of northern Eurasia. It is the only shrew native to Ireland.[3]<br />
Active throughout the day and night, the Eurasian pygmy shrew lives in undergrowth and leaf litter and lives off small insects and invertebrates.[4] It has an average weight of 4 grams[3] and has one of the highest metabolic rates of any animal, meaning it must eat at regular intervals — every two hours or so.