lemming به انگلیسی
From Longman Dictionary
lem‧ming /ˈlemɪŋ/ noun [countable]
a small animal that looks like a rat. Lemmings are known for following each other in large numbers and killing themselves by jumping off cliffs into the sea
Example
Coniferous forests, often hunting by day for mammals as large as squirrels and lemmings
The tundra is widely grazed by mammals, especially voles and lemmings that burrow in the undergrowth
His shoulders were shaking, and tears were scrambling down his crumpled cheeks like lemmings
John Giacobbi sums it up quite nicely when he portrays the average A&Rs as narrow-minded lemmings worried about job security
Tundra and high northern moorland, feeding mainly on lemmings and birds the size of Ptarmigan and Oystercatcher