Emperor penguins are tough species of penguins.
Of the 17 species of penguins, only emperor penguins breed during the extreme Antarctic winter, when temperatures can drop to below -50C and winds can reach 300 kilometers per hour.
Deliberate fraud. For the 1958 Disney nature film White Wilderness, filmmakers eager for dramatic footage staged a lemming death plunge, pushing dozens of lemmings off a cliff while cameras were rolling.