The scene may have been staged, but Wiki's entry on them suggests the demonstrated behavior is completely authentic, instead taking a more semantic argument about the term suicide: --- "Lemmings have become the subject of a widely popular misconception that they are driven to commit mass suicide when they migrate by jumping off cliffs. It is not a deliberate mass suicide, in which animals voluntarily choose to die, b…
> the demonstrated behavior is completely authentic But Attempting to cross a body of water is quite a bit different than plunging off a cliff. A rather low-to-the-ground animal has limited information about the width/risk of a water obstacle, but they do know what happens if they walk off a cliff. That's something they encounter in the course of normal daily behaviours required to provision fitness. Faking the cliff…
Everything I learned as a kid was later proven to be a myth, so what have I ever really known...?