* CastTheExpert: Rory Calhoun was of course quite adept at playing a rancher, after years of doing so in westerns.
* CompletelyDifferentTitle: Released in France as ''Les Rongeurs de l'Apocalypse'' (''Rodents of the Apocalypse''). Released in Germany and a few other markets under its WorkingTitle, ''Rabbits''.
* CreatorBacklash: Janet Leigh later said of the film "I've forgotten as much as I can about that picture", noting that it failed because it was impossible to find rabbits scary.
* CreatorsOddball: Producer AC Lyles had mainly done westerns, and this would mark his only attempt at a horror movie.
* NeverWorkWithChildrenOrAnimals: The main problem in trying to make a horror film about killer rabbits is that the animals are herbivores and naturally docile, making it hard to film one and make it seem aggressive. Outside of this, the fact that they're known as {{Explosive Breeder}}s meant that they started with two dozen rabbits when filming began, but they multiplied into hundreds
* ReferencedBy:
** If you look carefully, you can see a few seconds of this movie on the TV in ''Film/TheMatrix'' when Neo walks into the Oracle's apartment.
** Bits of footage also appear in the movie ''Film/NaturalBornKillers''.
** Also appears in a flashback in an episode of ''Series/EverybodyHatesChris'', explaining Julius' rabbit phobia.
* VacationDearBoy: Inverted. Creator/JanetLeigh took the role mainly because it was shot near her home, allowing her to visit her family on weekends.
* WhatCouldHaveBeen: Janet Leigh's two children were offered minor roles, but she turned them down, not wanting her children to be part of any kind of horror film. And then [[Creator/JamieLeeCurtis her daughter]] became a 'Scream Queen' [[{{Film/Halloween1978}} seven years later]]...
* WorkingTitle: Originally called ''Rabbits'', until the studio decided it wanted the presence of killer rabbits to be a surprise. Something which the ad company spoiled by sending out rabbit-themed souvenirs to different theaters.

----