[[quoteright:250:[[WesternAnimation/KungFuPanda http://static.tvtropes.org/pmwiki/pub/images/b744983f49b99cd69b295ddd71a956d5.jpg]]]]
[[caption-width-right:250:Everyone knows tigers love tofu.]]

In RealLife, vegetation isn't necessarily the best source of food. It's hard to digest, low in some essential nutrients, and requires a specialized digestive system in order to properly process it into anything useful for the animal eating said vegetation (symbiotic bacteria in the gut may even be necessary to digest some types of plants). On the plus side it's low in fat, is usually easy to find, and it can't run very fast. Because of this, most carnivorous animals are not well-adapted to eating plant materials (unlike herbivores, naturally).

In the world of fiction, however, this isn't the case. A normally carnivorous character can easily switch to a strictly vegetarian diet whenever they want without worrying about digestive problems. This usually occurs in shows with many {{Funny Animal}}s as a means to address CarnivoreConfusion by establishing a normally carnivorous animal as someone who prefers dining on a carrot to dining on a rabbit. It is often used for MySpeciesDothProtestTooMuch characters to indicate that they have switched their diet to separate themselves from their more "predatory" associates. Or, though not as often, maybe they decide that hunting for food is too much work and decide to just switch to veggies.

A subtrope of CarnivoreConfusion and ArtisticLicenceBiology. Contrast AscendedToCarnivorism for when a normally herbivorous animal decides to eat meat, or ManEatingPlant for when it's the plants that decide to switch around the food chain. Compare with {{Veganopia}}. Vampires who refuse to feed on humans are common enough to have [[VegetarianVampire their own trope]]. Being in a PredatorPreyFriendship might mean the predator invoking this.

'''Note:''' This ONLY applies to carnivorous characters[[note]]including species that are technically omnivorous but typically still need some meat and can't thrive on an all-vegetarian diet, such as dogs[[/note]] that switch to eating just fruits, vegetables and other plant-based foods.



[[folder:Anime & Manga]]
* ''Anime/KemonoFriends'': There are many types of Friends based on herbivores, carnivores, or omnivores. But all of them feed on the park's Japari buns, due to this, Friends don't hunt or fight each other unless they are playing, allowing friendships between herbivores, carnivores, and omnivores.
* Several of the carnivores including the hero in ''Manga/KimbaTheWhiteLion'' became this trope when they are no longer allowed to eat each other under Kimba's new rule.
* ''Anime/{{Pokemon}}'': Pretty much ''all'' Pokémon are shown to love eating berries (mostly because they also help heal various status effects in-game). This even includes what should be strictly carnivorous Pokémon like Mightyena (a hyena), Liepard (a leopard), Arbok (a cobra) and Rowlet (an owl). Subverted in the games and early episodes, which make it clear that Pokémon hunt each other.
* In ''Manga/HyperPolice'' there is an anthropomorphic lion named Mr. Nupu. How is he first introduced into the show? He walks into a bar, huge and bulky and intimidating in an anthropomorphic lion sort of way, and in a deep and serious voice orders.... a vegetarian stir-fry meal. Ba-dum bum!
* In ''Manga/AnimalLand'', this is one of Tarouza's goals in order to get meat-eating animals to get along with plant-eating ones. He finds the solution in the form of the Eternity Fruit.
* ''Manga/YondemasuYoAzazelsan'' had an episode where a man had supposedly taught a dog to be a vegetarian. This is subverted by the end, where it turns out he was actually lying.

[[folder:Comic Books]]
* ''All'' the carnivorous characters in ''Comicbook/CaptainCarrotAndHisAmazingZooCrew'', with the occasional exception of Peter Porkchops's old nemesis Wolfie. This is portrayed as a serious psychological problem on Wolfie's part and eventually leads [[spoiler: to him becoming a terrifying human-like creature called the [[OurWerewolvesAreDifferent Wuz-Wolf]].]]

[[folder:Fairy Tales]]
* Subverted in a fairy tale where a little girl befriends a wolf she saved. The wolf tries to switch to a vegetarian diet (due to the girl not liking that he has to kill other animals to feed), but nearly starves himself in the process and ends up going back to his carnivorous diet.

[[folder: Fan Works]]
* {{Subverted}} in ''FanFic/TheRiseOfDarthVulcan''. Thestrals are omnivores, and ''must'' eat flesh and drink blood to survive. But since this scared the rest of the pony races, they made up some nonsense about the blood hunger being a mental disorder, made it extremely illegal to drink blood or sell blood to be drunk, and forced the thestrals to use an alchemical substitute which ''barely'' keeps them alive. Needless to say, Princess Luna gets ''very'' angry when she finds out that Celestia permitted all this to happen.

[[folder:Films -- Animation]]
* Tiger from ''WesternAnimation/AnAmericanTail'' is a cat who is appalled at the very thought of eating mice. He does occasionally eat [[NoCartoonFish fish]], though, making him a pescetarian, despite [[YouKeepUsingThatWord calling himself a vegetarian]].
--> '''Tiger:''' ...but what I really like is some nice--shh...--''broccoli''.
* ''WesternAnimation/FindingNemo'' has a trio of sharks (led by a great white shark [[ShoutOut named]] [[Film/{{Jaws}} Bruce]]) that want to give up their fish-eating ways and become vegetarians. It's not made clear what they decide to switch their diet to, but it is shown in the film that they are struggling to make the change.
* ''WesternAnimation/TheLandBeforeTime'':
** Another subversion would be Chomper. When faced with the dilemma of [[CarnivoreConfusion being friends with sentient dinosaurs that are also potential prey]] he decides to switch his diet. Not to veggies, but to insects.
** An interesting variation occurs with the various pterosaurs ("fliers") in the films such as Petrie. Petrie is a ''Pteranodon''. ''Pteranodons''' diet consisted mainly of fish. However, Petrie and his family are vegetarians, yet it's never stated why.
* ''Animation/TheSeventhBrother'', a film about a group of rabbits adopting a puppy, actually averts this. While Tiny tries eating the same plants the rabbits do for a while, he begins to grow sick and weak because he just can't live on the stuff. In the end, the rabbits return him to his human owners, and his health immediately begins improving once he starts eating dog food.
* The Creator/DreamWorks film ''WesternAnimation/SharkTale'' had Lenny, a shark that decided to go vegetarian (even the very thought of eating meat made him nauseous). He disguised himself as a dolphin in order to prevent other fish from fearing him, but even though dolphins are also predators.
* According to WordOfGod, this is the case for every carnivorous animal in the ''WesternAnimation/KungFuPanda'' universe. Tigress, Viper, and Mantis are shown to greatly enjoy Po's homemade noodles in vegetable broth, while in the spin-off series ''Legends of Awesomeness'', other characters, like the [[NeverSmileAtACrocodile Croc Bandits]] eat apples and other fruits.
* Heart from ''Anime/YouAreUmasou'' falls under this, being a ''TyrannosaurusRex'' raised by a family of ''Maiasaura''. It's later subverted, in that he does switch to a carnivorous diet (though he is horrified at first that he actually ''likes'' the taste of meat), but he will still eat berries now and again.
* Despite several predators in ''WesternAnimation/{{Zootopia}}'' being shown eating produce, [[SubvertedTrope they aren't actually vegetarians]]. [[TheProducerThinksOfEverything The creators put a lot of thought into the world they were creating]], and as such they were ready for the problem of all mammals being sentient. The predators still need meat protein, so the eagle-eyed viewer can spot a fast food container from "Bug-Burga" in the background and [[WordOfGod the creators have confirmed]] that the predators eat insect protein in place of hunting prey. There is also a large neon sign for the "Fishtown Market", but it's unconfirmed if it sells fish or is merely the name of that area of Tundra Square and sells other products.
* The protagonist of ''WesternAnimation/LeoTheLion'' is a lion who is a vegetarian. It's never really explained why is, but he has a song about being one.

[[folder:Films -- Live-Action]]
* Godzilla Junior from the Heisei (1984-1995) era of ''Franchise/{{Godzilla}}'' films is shown to dine on leaves as a baby and toddler, despite the fact that it was established that Godzilla's species is carnivorous. Given that he started eating whales and presumably fish as a teenager, it seems like either he grew out of it or the species is actually omnivorous. Still got a mouth full of fangs though...
* ''Film/{{Godzilla 1998}}'': Zilla is something of an inversion. Marine iguanas are strictly vegetarians dining on seaweed, but Zilla's diet consists mainly of fish.
* The titular character from ''Film/TheodoreRex'' is a ''Tyrannosaurus'' and a "recovering carnivore". His diet mainly consists of vegetables and [[TrademarkFavoriteFood cookies.]]
* ''Film/SevenPounds'' has Emily, the female LoveInterest, claim her Great Dane is a vegetarian, eating only tofu and steamed broccoli. Obviously, the dog disagrees, devouring meat when offered it by Ben.

* ''Literature/ArashiNoYoruNi'' has this as a driving conflict of the plot, because the wolf Gabu is a carnivore but doesn't want to eat his goat friend, Mei. He tries to avoid eating meat, but finds he can't do it.
* The titular giant in ''Literature/TheBFG''. While his species is carnivorous, he has decided to eat a nasty-tasting vegetable called a "Snozzcumber" instead since he finds the idea of eating children appalling. Interestingly enough, it's the only other option he has besides eating humans since no other plants grow in Giant Land.
* The good-guy creatures of the ''Literature/{{Redwall}}'' series are mostly vegetarian, save the occasional fish or shrimp. This is plausible for the likes of mice and squirrels, but not for shrews or otters.
** The badger characters are also shown to have a mostly vegetarian diet. Like bears, badgers are actually omnivores and fruits and vegetation do take up a good portion of their diet along with insects and worms.
* ''Literature/ChildrenOfSteel'' had Terease, an anthropomorphic leopard raised by vegetarian humans. She took vitamin supplements at home but couldn't find them on the Astra, by the time Raj practically forced her to eat meat she was severely emaciated.
* Literature/{{Discworld}}:
** The Wowhawk is a special kind of bird of prey, "always on the lookout for the vegetarian option''.
** A vegetarian spider is briefly mentioned in the discussion of Discworld genetics; the wizards experimented with breeding fruit flies and peas, but misunderstood the basics, and said spider ate the buzzy green thing that resulted.
* Invoked but averted in ''The Unadulterated Cat'', also by Creator/TerryPratchett. The entry for "the green, organic, whole-earthbox cat" features a vegan couple who worked out "a vegetarian diet with occasional treats of fish" for their Siamese, and were blissfully unaware that it had consequently become one of the most dedicated hunters in the area.

* Referenced in the song "I Know I'm A Wolf" by Young Heretics:
-->''Yes, I know I'm a wolf\\
And I've been known to bite\\
But the rest of my pack--I have left them behind\\
And my teeth may be sharp\\
And I've been raised to kill\\
But the thought of fresh meat, it is making me ill\\
So I'm telling you that you'll be safe with me''

[[folder:Myths & Religion]]
* In a famous Korean myth, a tiger and a bear wanted to be human and, in order to do so, they had to eat nothing but garlic and herbs for 40 days. The tiger could not and gave up, while the bear persevered, became a woman, married a semi-divine being, and gave birth to the founder of the first organized Korean state. Note that bears are actually omnivores that can digest vegetable matter while tigers are obligate carnivore that cannot.
* In Literature/TheBible, Isaiah prophesies that when the Messiah comes to reign, "the lion shall eat straw like the ox," and animals will live together in peace.
* According to some Young Earth Creationists, carnivorous dinosaurs such as ''TyrannosaurusRex'' were (or once were) herbivores. When asked what the ''T. rex's'' razor-sharp teeth were used for, they replied that they were [[CriticalResearchFailure used for cracking open coconuts]].
** "Answers In Genesis" states that they either ate things like watermelons, or had different dental equipment before the fall of man (...long story there).
** There's a common creationist belief that ''T. rex'' was a herbivore because its teeth are shallow-rooted and thus tooth breakage would be a major problem for the animal. Before you point out that [[CriticalResearchFailure tyrannosaur teeth have roots twice the length of the crown and were firmly rooted in the jaw]], consider this question: Why would tooth breakage be an issue for an animal whose teeth constantly regenerates throughout its lifetime?
** Parodied [[http://pristichampsus.deviantart.com/art/The-Creationist-T-rex-165003798 here]].

[[folder:Puppet Shows]]
* In the 90s Canadian kids show ''Series/ChickenMinute'' there is a fox named Minute that became vegetarian since start living in the same shack with a hen named Chicken Mama. He switch to eat popcorn, like a friend of theirs, Anatole Bonbon, an alligator.
* In Jim Henson's ''Series/{{Dinosaurs}}'', Robbie Sinclair, the son of a megalosaurus and an allosaurus, converts to herbivorism in the episode "I Never Ate For My Father". Earl is initially outraged, but learns to accept it. (This is a series where a major character is a carnivorous triceretops, so it seems diet is entirely a matter of choice.)
* In ''Series/SesameStreet'', a character who appeared regularly in the 1990s was Chicago the Lion, who was vegetarian and whose TrademarkFavouriteFood was broccoli.
* ''Galli Galli Sim Sim'', the Indian co-production of ''Sesame Street'', also had a vegetarian lion, Boombah.

[[folder:Video Games]]
* In the [[VideoGame/DonkeyKongCountry1 very first]] ''VideoGame/DonkeyKongCountry'' game, the crocodilian Kremlings stole the Kongs' Banana Hoard for its nutritional value. This is [[EarlyInstallmentWeirdness never brought up in later games]], where the Kremlings and other villains take the bananas to distract the Kongs from their bigger schemes (''VideoGame/DonkeyKong64'') and/or to exploit the magical powers of the fruits (''VideoGame/DonkeyKongCountryReturns''). In regards of the first game this becomes AccidentallyCorrectWriting considering crocodilians do occasionally eat fruit, including bananas.
* Many adaptations of ''VideoGame/{{Snake}}'' have the snake eat only fruit, mushrooms etc. instead of other animals, presumably to [[PredatorsAreMean keep it sympathetic]]. Examples include ''Hyper Viper'', ''[=AxySnake=]'' or ''Super Nibbly''. In reality, snakes are exclusively carnivores.
* Noodle, the snakey protagonist of ''VideoGame/SnakePass,'' is stated to be a vegetarian by the [[AllThereInTheManual loading screen tips.]]
* In the ''Toys/FlushForce'' app, the favorite food of Twin Grin, a two-headed shark, is apples, despite the fact that fish is an option to feed the Flushies.
* Inverted with Gorila Grodd in ''VideoGame/Injustice2'', who is occasionally implied to eat ''people'' - or at least [[BrainFood their brains.]]
-->'''Blue Beetle:''' Scarab says gorillas are herbivores.\\
'''Grodd:''' Most are. ''I'm'' not.

[[folder:Web Original]]
* The Dro discusses this trope and the problems it can cause [[https://www.youtube.com/watch?v=Z1iIHVVBgJM in this video]], as a response to some other animal owners who feed their carnivorous animals vegan diets.

[[folder:Web Comics]]
* Inverted in ''Webcomic/DominicDeegan'', where a character who failed to realise the difference between Orcs being herbivores and vegetarians (in this universe they're the former) tried to convince an Orc character to eat jerky to prove that they can eat meat. [[SubvertedTrope Vomiting ensues.]]
** The reason for the confusion is because orcs have massive tusks. The reason for ''that'' is because plant life in their native land is impossibly tough (when Luna saw an orc plant at one point, she thought it was the cutting board).
* The titular characters of ''Webcomic/OzyAndMillie'' appear to be vegetarian foxes, though it's not mentioned much, there's one strip where Millie's mom orders vegetarian soup and the clerk makes a big deal out of it. And Ozy's dragon dad prefers to roast tofu knights.
* ''Webcomic/RaineDog'' is vegan, apparently Creator/DanaSimpson likes to insert that into her comics.
* In ''{{Webcomics/Meadowhawk}}'' a modern dragon muses on what his medieval ancestors would think of them [[http://meadowhawk.net/2013/04/13/bigger-questions/ eating tofu-and-broccoli stir fry]].
* In ''Webcomic/KevinAndKell'' it's unusual, and [[DoesThisRemindYouOfAnything generally frowned upon]], but happens now and then.
** [[spoiler:Bruno]], a wolf, becomes a closet grass-eater[[note]]he has a literal closet full of grass in his room[[/note]] under the influence of his herbivorous girlfriend and then goes openly "trans-diet" and has several stomachs installed surgically.
** Sheila, Kell's near-identical cousin, went through several alternative lifestyles that included herbivorous diets. However, when she is first introduced, she has already become a "born-again meat-eater".
** Original description of the strip on [=CompuServe=] Funnies Forum stated that at home Kell cooks tofu making it look like meat products for herself and Rudy. This idea was never mentioned in the strips[[note]][[http://www.kevinandkell.com/2005/kk0117.html One strip]] had Kevin doing this, but long after it was made clear this isn't Kell and Rudy's usual diet[[/note]] and after a while disappeared from the description.

[[folder:Western Animation]]
* Parodied in an episode of ''WesternAnimation/{{Futurama}}''. An AnimalWrongsGroup claims that they have taught a lion to become a strict vegetarian, in response to Leela pointing out that while humans eat meat, so do animals. [[DeconstructedTrope The lion in question looks very sickly]] [[RealityEnsues and lets out a single pathetic-sounding cough.]]
* An episode of ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' featured an old lady and her pet spider. Said spider was shown to love eating melons.
* ''WesternAnimation/TheSmurfs'' are shown to be mostly vegetarians in their cartoon show appearances, but have on occasion eaten meat-based products. Though it does make you wonder where the meat actually comes from.
* Parodied in an episode of ''WesternAnimation/SpongeBobSquarepants''. In the episode, the Flying Dutchman reveals that he devours people when they are shown to be lousy members of his crew. Spongebob remembers that he still has one wish left and wishes that the Flying Dutchman was a vegetarian and therefore wouldn't eat them. The Flying Dutchman then just turns them all into fruit so he ''can'' eat them.
* Subverted by ''WesternAnimation/TheGoodeFamily's'' dog Che. They think he's a vegetarian but he's actually responsible for a lot of missing neighborhood pets.
* One episode of ''WesternAnimation/JohnnyTest'' had a ladybug that loves to eat flowers.
* In the ''WesternAnimation/TinyToonAdventures'' episode, "Rock N' Roar", when Buster gets a [[DomesticatedDinosaurs pet]] ''[[DomesticatedDinosaurs T. rex]]'', which he names "Rover", he tries raising him to eat vegetables, since he has no meat byproducts. This doesn't work at first, and Buster is willing to sacrifice himself to keep Rover from going hungry, but Rover can't eat his own surrogate parent, so he agrees to let Buster feed him large amounts of vegetables.
* Bizarrely inverted by Leslie from ''WesternAnimation/TheAmazingWorldOfGumball'', who is a strict carnivore despite being an anthropomorphic ''flower''. He reasons that this way he's "[[CarnivoreConfusion not eating [his] own kind]]", and tries to get his cousin (a peanut) to do the same by taking an outraged tone while describing the way vegetables are prepared (in a parody of the way a stereotypical vegetarian talks about how livestock are treated). If Leslie also lives off sunlight like an actual flower isn't stated.
* Ginger, the cat who co-owns the village shop in ''WesternAnimation/PeterRabbit'' is vegan, although he does like cakes. Presumably the same goes for his canine partner Pickles. (Not the case in [[Literature/TheTaleOfGingerAndPickles the original book]], where they simply think eating customers is bad for business.)

[[folder:Real Life]]
* The Giant Panda is a classic RealLife example. It's really an omnivore, and has a digestive system better suited for eating meat. However, its main diet consists of bamboo. This is because bamboo is plentiful and easy for the slow-moving panda to obtain as a food source rather than expending all of its energy chasing after prey. Their very inefficient digestion of bamboo makes them even more unsuited for hunting afterwards. So despite their reputation giant pandas ''will'' eat meat if given the opportunity. A video shows a panda eating a cow. This is one example of a species that [[CripplingOverspecialization evolved to be too specialised.]]
* [[http://scienceblogs.com/tetrapodzoology/2008/10/alligators_eat_fruit.php Some individual alligators are known to eat fruit.]] No one is quite sure why, and the alligators do still mostly eat meat when given the chance, but scientists think it may be an adaptation for when food supplies are low (and might help explain how crocs have survived as long as they have). Captive alligators seem to enjoy [[http://scienceblogs.com/tetrapodzoology/2009/06/27/alligators-vs-melons/ eating watermelon]] as part of enrichment. Some prehistoric crocodilians were, in fact, herbivorous.
* There's at least [[http://www.vegetarismus.ch/vegepet/tyke.html one known]] example of a vegetarian lion that lived 9 years. Note that this could ''never'' have happened in the wild. Cats--including lions--are obligate carnivores and most cannot digest vegetable matter at all. The only exceptions are the [[http://www.arkive.org/margay/leopardus-wiedii/ margay]] of Central and South America, which occasionally eats fruit, the jungle cat of Asia, which has been said to eat fruit when prey is scarce in the winter, the [[http://www.indiantiger.org/wild-cats/flat-headed-cat.html flat-headed cat]] of Southeast Asia, which sometimes eats fruit and sweet potatoes, and the snow leopard of Central Asia and the Himalayas, which eats lots of vegetation. The diet of the "vegetarian lion" therefore contained many artificial supplements.
* Pet foods for dogs and cats typically contain a lot of vegetable matter, albeit processed for easy digestion by a carnivore. Both are mildly omnivorous. Dogs can even be trained to eat vegetarian foods, though this is best done with the advice of a veterinarian to insure they get the nutrients they need. Otherwise the dog's health is going to be put at risk.
* Many paleontologists believe that the [[UsefulNotes/StockDinosaursNonDinosaurs cave bear]] was almost entirely herbivorous, much like the panda, as evidenced by their dentition and isotope analysis. Like the panda, however, it may have eaten meat if given the opportunity.
* ''[[http://en.wikipedia.org/wiki/Bagheera_kiplingi Bagheera kiplingi]]'', the only known mostly herbivorous spider. It sort of cheats, though; it actually feeds on protein-rich pods growing on certain kinds of Acacia tree, which are meant to be eaten by symbiotic ants.
* The [[http://en.wikipedia.org/wiki/Aardvark_cucumber aardvark cucumber]] is a species of plant that has evolved a mutual relationship with the aardvark, which eats the fruit for the water, defecates the seeds and buries it. This is interesting because the aardvark otherwise is an exclusive insect eater. Carnivores can actually be ''preferred'' seed dispersers over herbivores because they can't chew up or fully digest the seeds, and it's possible that avocados evolved their fatty flesh and durians evolved their intense odor to trick carnivores into eating them.
* There is, believe it or not, a [[https://en.wikipedia.org/wiki/Bonnethead partially herbivorous shark]]. The bonnethead, a type of small hammerhead shark, regularly eats seagrass and in some cases it constitutes up to half of their diet.
* Perhaps the most bizarre real-life example of this trope is the pitcher plant ''Nepenthes ampullaria''. Unlike most pitcher plants, its pitchers are low and wide, and grow straight out of the ground. They rarely catch insects, but instead collect leaves and other plant debris falling from the trees, which are then digested by the plant. That's right, this is a carnivorous plant that has become an herbivore. In other words, pretty much the opposite of a carnivorous animal switching to eating plants.