Startling images have captured an otter catching and killing an unsuspecting duck for its dinner in a river. The carnivorous mammal was on the River Kent in Cumbria when it pounced on the defenceless mallard duck. It was seen tightly clamping its jaw around the neck of its prey before swimming away with the lifeless duck clasped between its teeth. While otters are known to eat ducks, it is a rare sight - with their diets usually consisting of fish, frogs and small birds. Local wildlife photographer Edward Wilkinson watched the horrifying scene unfold from a nearby river bank. Horrifying images have captured an otter catching and killing an unsuspecting duck for its dinner in a Cumbrian river