For ten points, name this type of creature that guards the Cave of Caerbannog in Monty Python and the Holy Grail and tells Donnie Darko that the world will end 28 days, 6 hours, 42 minutes, and 12 seconds.
The opening sequence of Robert Bresson's cult classic Mouchette features a trapped one. In the film adaptation of Stephen King's Riding the Bullet, one is devoured by a rabid dog that is promptly run over by a car. Michael Moore documents a woman who raises them for income, slaughtering them at the age of four months in Roger and Me. In Fatal Attraction, Glenn Close boils one belonging to her lover's daughter.  For ten points, name this type of creature that guards the Cave of Caerbannog in Monty Python and the Holy Grail and tells Donnie Darko that the world will end 28 days, 6 hours, 42 minutes, and 12 seconds.
The opening sequence of Robert Bresson's cult classic Mouchette features a trapped one.
{rabbit} (accept equivalents)