* ''Film/MontyPythonAndTheHolyGrail''
** The [[TropeNamer Rabbit of Caerbannog]]. Ironically, Arthur and his knights are [[CassandraTruth warned repeatedly by Tim about the power of the rabbit]]. They don't listen, and he laments how no-one listens to him because "it's just a harmless little bunny!"
-->[[http://www.youtube.com/watch?v=Nvs5pqf-DMA "Look]] at the ''bones''!"
** An implied example in the same movie would be the Vicious Chicken of Bristol which Sir Robin nearly stood up to, though given that it's [[LovableCoward Sir Robin]], the Chicken might be a case of DeathbringerTheAdorable.
* Given a LampshadeHanging in ''Film/GalaxyQuest'': while the rest of the crew is {{Squee}}ing about how adorable the child-like alien miners are, the very GenreSavvy Guy worries, "Oh, sure, they're cute now. But in a second they're going to get mean. And they're going to get ugly somehow. And there's going to be a million more of them." Moments later, he's proved right.
* Early in ''Film/{{Barbarella}}'', the title character is similarly menaced by a group of dolls whose mouths show very pointy teeth. Later in the movie, she is nearly killed by vicious killer budgies (parakeets).
* The Mogwai in ''Film/{{Gremlins}}'', except the original Gizmo; fluffy and adorable, they are cruel tricksters who eventually turn into hideous ([[UglyCute yet still somewhat cute]]) monsters which go on a deadly rampage. Indeed, every imaginable variant on this trope seems to run through most, if not all, Gremlin folklore.
* ''Franchise/JurassicPark'':
** Dennis Nedry in ''Film/JurassicPark'' gets killed by a fairly harmless-looking dilophosaurus... after it spits poison in his face, then ambushes him when he tries to get back to his truck. It should be noted that dilophosaurs probably [[SomewhereAPalaeontologistIsCrying couldn't do that]]. Then again, we really have no way of knowing, but they certainly did ''not'' have those nifty-looking frills. Also, Dilophosaurs were much bigger than the one in the movie.
** Furthermore, there are small, harmless-near-cute-looking Procompsognathus/Compsognathus in ''Film/TheLostWorldJurassicPark'', whose packs are enough to turn a healthy adult male into...
-->"Did you find him?"\\
"...Just the parts they didn't like."
* ''Film/NightOfTheLepus,'' a movie about '''[[AttackOfThe50FootWhatever Giant]] [[AttackOfTheKillerWhatever Killer Bunny Rabbits]]'''. It is [[NightmareRetardant intended as a horror film]]. Meat-eating rabbits that hunt and kill horses at one point. Three scientists grab the Idiot Ball hard to make it happen.
* The gopher in ''Film/{{Caddyshack}}''.
* ''Film/CatsAndDogs'' had their antagonist Mr Tinkles--the cute cat who's also a DiabolicalMastermind.
* Let's not forget ''Film/{{Screamers}}''. Can I come with you?
* The Vampire Pomeranian in ''Franchise/{{Blade}}: Trinity'' named Pac-Man. It appears to have the split-mouth of a Reaper.
-->'''Hannibal King:''' You made a goddamn vampire... ''Pomeranian''?!?
* In ''Film/MomAndDadSaveTheWorld'', Dick Nelson encounters a group of cute mushroom-like creatures which appear to be friendly... until he tries to pet one. It opens a huge mouth with sharklike teeth and almost takes off his hand.
* ''Franchise/StarWars'''
** Ewoks. Yes, they're cute. Yes, they're fuzzy and huggable and all that. Yes, they're adorable miniature bears. Think about that one. Miniature ''{{bears|AreBadNews}}''! With astonishing engineering skill for a neolithic materials base, extensive knowledge of sophisticated warfare, and a willingness to kill and eat other sapient beings. Think of them as armed, sapient, and highly sophisticated sociopathic bipedal giant koalas who regard you as potential food, and you'll start to understand exactly why the Ewoks qualify for this trope.
** Still don't believe they're trouble in cute form? Go read ''Apocalypse Endor'' (Star Wars Tales 14). [[spoiler:That's right -- Endor is TheEmpire's [[TheVietnamWar 'Nam]].]]
** Also from ''Star Wars'' is Yoda, the cute little floppy-eared goblin that talks funny. Even Luke and R2-D2 thought he was harmless when they met him. In actuality, he is a {{Badass}} Jedi that can pull a triple backflip and chop off your head before you blink
* The title character in the ''Film/{{Leprechaun}}'' series.
* Chucky from the original ''Film/ChildsPlay'' films (before his Frankenstein makeover).
* On the good ship ''Film/{{Serenity}}'', who's the most dangerous crewman? Is it the wily and wary [[TheCaptain captain Malcolm Reynolds]]? The calm, stoic, and deadly [[LadyOfWar first mate Zoe]]? The [[TheBigGuy giant, burly Jayne]] with [[WallOfWeapons enough weapons to outfit a revolution]]? Nope. Look behind them. Not at the [[AcePilot pilot]], or the [[GoodShepherd preacher]], though they're [[LetsGetDangerous deadly enough]] [[BadassPreacher in their own right]]. Not at the [[WrenchWench mechanic]], and not the [[TheMedic doctor]] or [[HookerWithAHeartOfGold the Companion]]. Yeah, ''There''. That teenage girl in the back, with the [[MessyHair unwashed hair]], [[EeriePaleSkinnedBrunette pale skin]], glazed and distracted eyes, [[CloudCuckoolander who's mumbling something about hummingbirds]]? Her name is River. Get on her bad side, and ''[[TranquilFury she]] [[WaifFu will]] [[SuperSoldier fucking]] [[PsychicPowers end]] [[OneManArmy you]].''
* [[http://www.youtube.com/watch?v=IzzUiEF86qA This Spanish student film]] uses this trope quite deliberately with its genetically altered Death Rabbit.
* Played with in ''Film/{{Gozu}}''. You'll never know if the cute Chihuahua in fact was a trained Yakuza attack dog.
* A whole colony in ''Film/TheLoneRanger''. It's rather creepy too.
* Sam in ''Film/HappyAccidents'' is terrified of tiny dogs.
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