Quick answer
Weasels feed on mainly mice and voles, adjusting with season, age, and what is abundant in Farmland, hedgerows, grassland, woodland. That label is a preferred pattern, not every item an individual might sample.
Key takeaway
Weasels feed on mainly mice and voles, adjusting with season, age, and what is abundant in Farmland, hedgerows, grassland, woodland. That label is a preferred pattern, not every item an individual might sample.
Weasel diet overview
Weasels (Mustela nivalis) are best summarised as Carnivore (mainly mice and voles). Anatomy and habitat (Farmland, hedgerows, grassland, woodland) decide whether they hunt, graze, filter, scavenge, or mix strategies across the year.
How weasels find food
Energy-rich foods are prioritised when available; lean seasons force broader diets or longer travel. Young animals may eat different items or receive food from parents.
Weasel role in the food web
As predators or scavengers, weasels move nutrients and influence prey or vegetation.
Feeding and human conflict
Never feed wild weasels. Habituation raises injury risk and can lead to lethal management. Captive diets must match species needs, not generic pet food rules.
Britain's smallest carnivore
The weasel holds the title of Britain's smallest carnivore and is one of the tiniest predatory mammals anywhere. Its long, slender body can be only 16–23 cm from nose to tail root and the smallest individuals weigh under 50 g. That tiny frame is an evolutionary trade-off: slenderness lets the weasel chase mice, voles, and shrews directly into their burrows — a pursuit no other British predator can follow. They can ki
Weasel vs stoat: the key differences
The weasel and stoat are closely related and frequently confused, but several features separate them reliably. The weasel is smaller and more compact, with a short tail that is plain brown all the way to the tip. The stoat is noticeably larger with a longer tail that always ends in a black tip — even in the white ermine winter coat that stoats in colder regions develop. In flight, stoats often bound with an arched ba
Sources
Weasel FAQs
What do weasels eat?
Weasels feed on mainly mice and voles, adjusting with season, age, and what is abundant in Farmland, hedgerows, grassland, woodland. That label is a preferred pattern, not every item an individual might sample.
What is the scientific name of the weasel?
Mustela nivalis — used in research and conservation listings for weasels.
Where do weasels live?
They are associated with Farmland, hedgerows, grassland, woodland. Local presence depends on food, cover, and human land use.
What is the conservation status of weasels?
Listed in our guides as Least Concern. Check the IUCN Red List and national assessments for the latest formal category.