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[[quoteright:350:[[WesternAnimation/TheBadGuys2022 https://static.tvtropes.org/pmwiki/pub/images/7037954fe4652f544690f686a0741f90.jpg]]]]
[[caption-width-right:350: When they look like '''this''', go figure they'll be the villain of every story!]]

->''Bats and owls and coiled sea dragons\\
Crocodile and carrion beasts\\
Swirling in the growing darkness\\
Join us in the coming feast\\
Spectre, wraith, and apparition\\
Spirit, demon, phantom, shade\\
Salamander serpents, dog-faced devils\\
Dance and watch the dying sunlight fade!''
-->-- "'''[[https://www.youtube.com/watch?v=L_hJxBUMuss&ab_channel=EarthaKitt-Topic Snuff Out the Light]]'''", CutSong from ''WesternAnimation/TheEmperorsNewGroove''

This index is for AnimalStereotypes tropes in which RealLife categories of animal (other than humans) are depicted as evil, scary, creepy, or threatening. See also GoodAnimalsEvilAnimals, WhatMeasureIsANonCute, UnpleasantAnimalCounterpart, and EvilRaceTropes.

Contrast PleasantAnimalsIndex.
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!!Tropes

* AmphibianAssault: Frogs, toads, and other amphibians portrayed as threats.
* AngryAngryHippos: Hippopotamuses that are portrayed as particularly aggressive and brutish creatures.
* AngryGuardDog: Large canines used for security jobs or as EliteMooks.
* AnimalStampede: Multiple, maybe hundreds of herbivores running together and trampling everything in their path.
* AntAssault: Ants portrayed as the source of trouble.
* AtrociousArthropods: Arthropods (insects, arachnids, crustaceans, myriapods) or arthropod-themed characters and creatures are portrayed as evil and dangerous.
* BadOlBadger: Badgers portrayed as aggressive and vicious.
* BatOutOfHell: Monstrous bats.
* BatScare: Characters who are exploring an apparently deserted location unexpectedly disturb a colony of winged animals.
* BearsAreBadNews: Bears portrayed as vicious and dangerous.
* BeeAfraid: Bees are portrayed as abhorrent invaders.
* BewareOfViciousDog: A dog who seemingly hates everyone and everything.
* BigCreepyCrawlies: Giant insects and arachnids.
* BloodsuckingBats: Bats who consume blood.
* BrutalBirdOfPrey: Birds of prey are portrayed as menacing and scary.
* BrutishBulls: Bulls portrayed as violent, ill-tempered, and aggressive.
* BugsHeraldEvil: The use of insects, arachnids, or other arthropods to indicate a greater evil.
* BullSeeingRed: Red as a common provocation of a bull's anger.
* BullyBulldog: Bulldogs depicted as vicious bullies.
* CatsAreMean: Cats who are mean.
* CatsAreSuperior: Cats who are arrogant.
* CirclingVultures: Vultures circling around deserts and/or someone when they're at death's door.
* ClamTrap: Clams and other bivalves that can bite people or trap them in their shells.
* CockyRooster: Roosters depicted as fierce, aggressive birds or with a smug, snobbish attitude.
* CreepyCamelSpider: Solifugids portrayed as hyper-aggressive desert terrors, often well beyond what they are in reality.
* CreepyCentipedes: Centipedes portrayed as frightening and unnerving monsters.
* CreepyCockroach: Cockroaches depicted as vile, filthy or unpleasant creatures.
* CreepyCrows: Crows depicted as creepy animals associated with unpleasant things.
* CruelCoyotes: Coyotes being depicted as just as mean and vicious as their bigger cousins, the wolves.
* CruelElephant: Elephants that are violent and aggressive.
* CunningLikeAFox: Foxes depicted as crafty, wily and unscrupulous.
* DeadlyDingos: Dingos will rip you apart and eat your babies.
* DeviousDolphins: Dolphins as evil and malevolent creatures.
* DireBeast: Larger versions of common beasts.
* DreadfulDragonfly: Giant, vicious dragonflies.
* EekAMouse: A fairly common reaction towards small rodents, particularly mice.
* ElectricJellyfish: Jellyfish portrayed as PsychoElectro.
* EscapedAnimalRampage: When an animal escapes from a zoo, a circus, a pound, a laboratory, or some other kind of area where it formerly lived in restricted conditions.
* EvilEggEater: If it eats other animals' eggs, it's depicted as being an evil trait.
* EyeballPluckingBirds: Crows, vultures, and other scavenging birds that will ''always'' go for the eyeball of both living and dead animals.
* FeatheredFiend: Evil or otherwise hazardous birds.
* FedToPigs: Feeding (usually dead) people to domestic pigs.
* FedToTheBeast: Feeding (usually live) people to man-eating animals or monsters.
* FiendishFish: Dangerous, sometimes outright evil, fish.
* FliesEqualsEvil: The arrival of flies, mosquitoes, wasps, or other creepy crawlies to indicate something horrible is about to happen - or that, with their scavenging ways, something has.
* FoulFox: Foxes portrayed as aggressive, cruel, or even outright evil.
* FoulWaterfowl: Geese, ducks, and swans, among other water fowl, are depicted as aggressive animals.
* FullBoarAction: Dangerous pig- or boar-based monsters.
* GiantEnemyCrab: Outsized, dangerous crabs.
* GiantSpider: Impossibly large spiders are especially scary.
* GiantSquid: Gigantic squid depicted as sea monsters.
* GruesomeGoat: Goats portrayed as aggressive or Satanic creatures. Occasionally Rams due to being more aggressive and unpleasant compared to [[SweetSheep lambs]].
* HairRaisingHare: Rabbits depicted as dangerous, evil or scary, as a deliberate subversion of the association between bunnies and cuteness or goodness.
* HeadButtingPachy: The unrealistic portrayal of Pachycephalosaurid dinosaurs headbutting things all the time.
* HeinousHyena: Hyenas portrayed as vicious, underhanded, cowardly or otherwise unpleasant creatures.
* HellHound: A big, supernatural dog that is evil.
* HellishHorse: A monstrous horse.
* InstantLeechJustFallInWater: Fall in suspicious water, emerge covered in leeches.
* KidnappingBirdOfPrey: Predatory birds that snatch people from the ground and carry them off into the sky.
* KillerGorilla: A violent gorilla.
* KillerRabbit: When a monster is much more dangerous than it appears.
* LandShark: Shark or shark-like creatures that naturally appear on land, be it with legs or burrowing through the ground.
* MacabreMothMotif: Moths depicted as a bad omen.
* MaliciousMonitorLizard: When monitor lizards in a work are portrayed as evil.
* ManiacMonkeys: Monkeys and apes are the bad guys.
* MessyMaggots: Something gross can easily be pictured as even grosser if swarms of maggots are covering it, while characters that happen to be maggots themselves have this gross trait often magnetized towards them in their personality.
* AMischiefOfMice: Mice that are portrayed in a more antagonistic light than NiceMice.
* MisterMuffykins: Small dog breeds that are yappy, or even horrendous.
* MonsterWhale: Whales depicted as gigantic sea monsters who swallow ships and people whole.
* MonstrousSeal: Seals portrayed as aggressive, dangerous predators.
* MosquitoMiscreants: Mosquitoes being portrayed as either evil or annoying.
* MothMenace: Threatening (and often giant) moths and butterflies.
* NeverSmileAtACrocodile: Crocodilians depicted as evil man-eaters.
* OminousOwl: Owls portrayed as creepy or scary.
* OneEyedBats: Bats with one eye. They often serve the villains.
* PainfulPointyPufferfish: Fictional pufferfish seen stabbing things with their spikes.
* ParasitesAreEvil: Parasites and parasitoids depicted as villainous and morally repugnant.
* ParasiticHorror: Parasitism being played for horror and squick.
* PervertedPig: Pigs depicted as lecherous or perverted.
* PeskyPigeons: Pigeons depicted as filthy and unpleasant, sometimes evil and malevolent, creatures.
* PestEpisode: When a household pest moves in, and most of the episode is spent trying to catch it.
* PikePeril: Pike portrayed as evil or vicious.
* PiranhaProblem: Piranhas portrayed as far more vicious than they are in reality.
* PredatorsAreMean: Carnivorous animals are depicted as villainous much more often than herbivores in fiction.
* PrehistoricMonster: Prehistoric animals portrayed as far more deadly and vicious than they might have actually been.
* PsychoElectricEel: Electric eels portrayed as much more powerful/dangerous/PsychoElectro than they really are.
* PsychoPoodle: Poodles portrayed as vicious, or even evil.
* RaptorAttack: Unrealistic or inaccurate portrayals of Dromeosaurid dinosaurs.
* ReptilesAreAbhorrent: Reptiles are depicted as evil.
* RhinoRampage: Rhinos portrayed as gigantic brutes always ready to charge down anything that gets them mad.
* RightHandAttackDog: A villain's active fighter pet.
* RightHandCat: The villain is often seen stroking a cat.
* RodentsOfUnusualSize: Giant, destructive, sometimes man-eating rodents are featured in some horror movies.
* SavageSpinosaurs: Spinosaurid theropods are portrayed as scary predators.
* SavageWolves: Wolves as nasty, savage, rapacious predators; if intelligent, they may be sadistic and cruel, as well.
* ScaryScorpions: Scorpions portrayed as terrifying, dangerous and aggressive, often far more so than they actually are in real life.
* ScaryStingingSwarm: Insects who come in swarms have stings that kill.
* ScavengersAreScum: Scavenging animals portrayed as evil in fiction.
* ScrewballSquirrel: Squirrels are depicted as unhinged and zany, if not aggressive and sadistic.
* SeaHurtchin: Urchins existing only to hurt people with their spines.
* SinisterStingrays: Rays are shown in an ominous and devilish light.
* SinisterSwine: Pigs are portrayed as cruel, aggressive, or scary.
* SlayingMantis: Praying mantises portrayed as badass and scary.
* SlipperyAsAnEel: Eels depicted as sly, conniving, and untrustworthy creatures.
* SmellySkunk: Skunks are portrayed as smelly and unclean, sometimes evil and dangerous.
* SnakesAreSinister: Snakes portrayed as creepy or evil creatures.
* SneakySpider: Spiders are portrayed as cunning and devious (though not all are actually villainous).
* SpiderSwarm: Swarms of improbably social spiders moving -- and, often enough, hunting -- as one.
* SpidersAreScary: Spiders portrayed as terrifying, venomous and dangerous, often far beyond any threat they actually pose in real life.
* SpookyAnimalSounds: The calls of stereotypically ominous or scary animals being used to establish spooky or dark moods.
* SuperPersistentPredator: A predator that goes to [[{{Determinator}} unrealistic lengths]] to catch its prey.
* SuperPoweredShrimp: A creature based on a shrimp, typically one of the more eccentric species enhanced in some way according to the media it appears in.
* SwarmOfRats: A large group of rats added for scare factor.
* TemperCeratops: Ceratopsian dinosaurs described as being akin to bulls and rhinos; temperamental and aggressive by herbivore standards.
* TentacledTerror: Cephalopods, cephalopod-like creatures, and just anything with tentacles being portrayed as alien and terrifying.
* TermiteTrouble: Termites portrayed as a terrifying invisible force that rapidly disintegrates wood.
* TerrifyingTyrannosaur: Tyrannosaur dinosaurs are depicted as the ferocious tyrant of the Cretaceous period.
* TerrorDactyl: Generally, these tweaks make the pterosaurs scarier and nastier.
* ThreateningShark: Sharks portrayed as a likely danger, or as evil, vicious man-eaters.
* ToughArmoredDinosaur: Thyreophoran dinosaurs portrayed as formidable, aggressive, and [[DumbDinos frequently dim-witted]] juggernauts.
* VileVulture: Vultures are portrayed as amoral and villainous.
* VillainHoldsTheLeash: The villain's pet is the reason why they're a threat.
* VolatileTasmanianDevil: Tasmasnian Devils are portrayed as AxCrazy and unpredictable, often hungry creatures.
* WarElephants: Elephants as [[BeastOfBattle Beasts of Battle]].
* WickedWasps: Wasps portrayed as mean or evil.
* WickedWeasel: Weasels portrayed as shifty, untrustworthy creatures.
* WilyWalrus: Walruses portrayed as villains, especially as {{Fat Bastard}}s embodying Gluttony, Greed or Sloth.
* XenophobicHerbivore: Herbivores depicted as wary of strange or unfamiliar creatures, or even cruel and evil, often to the point of FantasticRacism.
* YouDirtyRat: Rats are seen as dirty and disgusting, hence calling a dishonorable person one.
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