History InterspeciesAdoption / FanWorks

[[AC:''Film/JurassicPark'']]

* ''Fanfic/{{Anthropology}}: It is revealed that [[spoiler:Lyra was born as a human, but was adopted by a foal-less couple [[DoorstopBaby after they found her in the Royal gardens of Canterlot]] and transformed into a pony foal to let her fit more easily into Equestrian society]].

* ZigZagged in ''Fanfic/{{Medicated}}''. Anne, Sasha, and Marcy (all humans) were raised by frogs, toads, and newts respectively since they were babies, but their adoptive parents gave them potions to turn them into their respective species to make them easier to raise.

* In ''Fanfic/{{Daemorphing}}'', Mr. Tidwell (a human) and Illim (a Yeerk) adopt Estrid (an Andalite) [[spoiler:to show that there can be peace between their three species as part of the end-of-war negotiations.]]

* ''Fanfic/BelieveInTheWeirdAndWild'': Steven, a half-Gem HalfHumanHybrid, was adopted by the Mewman Butterfly family.
* In ''Fanfic/BlazBlueAlternativeRemnant'', Penny Polendina, [[spoiler:a [[ArtificialHuman Murakumo Unit]] and LivingWeapon]], is the adoptive daughter of Pietro Polendina, an ordinary human.
* Happens at least twice in ''FanFic/TheBridge'' and its expanded universe.

** Subverted as Starswirl the Bearded and the founders effectively adopted Celestia and Luna one thousand years ago, as while they are equines, they're alicorns [[spoiler: and artifical creations of Harmony.]]

* In ''First Meetings Universe'' -- a Franchise/MassEffect-[=MLP:FiM=] crossover -- ''Mass Effect: Shepard and the Rainbows'' starts with a pegasus soldier saving a human girl from pirates and then adopting her. Thus Riley Shepard, Rainbow Dash and Scootaloo end up being sisters.
* In ''Fanfic/HarryTano'', Ahsoka (a Togruta) rescues a four-year-old Harry (a human) from the Dursley house. Shortly afterwords, she becomes his adoptive mother, and is recognized by a majority of characters as such.

* In ''Literature/{{Worm}}'' and ''ComicBook/{{Supergirl}}'' crossover ''Fanfic/TheLastDaughter'', Taylor is a Kryptonian baby who was adopted by two human parents.
* In ''[[https://www.fanfiction.net/s/5779581/1/The-Lion-the-Cat-and-the-Turtles The Lion, the Cat and the Turtles]]'', [[Franchise/TeenageMutantNinjaTurtles Splinter]] and [[Literature/TheChroniclesOfNarnia Aslan]] each acknowledge that Susan is Aslan's daughter just as the Turtles are Splinter's sons despite the species difference.

* In the [[ComicBook/SpiderMan Spider-Verse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/SpiderNinja'', while Master Splinter (a mutant rat) adopted the Turtles like in canon, here he also [[ImTakingHerHomeWithMe found]] and adopted the orphaned four-year-old [[GenderFlip Petra Parker]]. The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

* In the fan video ''Bite-Sized VideoGame/{{Minecraft}} 2'', the short clip at 0:44 shows a flock of sheep grazing. Among them is a Creeper, which bleats.

* In ''[[https://www.fanfiction.net/s/7158151/1/Chickenzilla Chickenzilla]]'', Manga/{{Naruto}} is adopted by a 5 foot tall, fire breathing chicken (ItMakesSenseInContext, [[CrackFic sort of]]).

* Doubling as HappilyAdopted, the basis of ''[[Fanfic/LuzClawthorne The Luz Clawthorne Saga]]'' is that Eda, a witch, adopted Luz, a human, as a baby. Additionally, [[spoiler:Vee, a basilisk, is adopted by human cops Blubs and Durland while the Calamity trio (Anne, Sasha, and Marcy) were each adopted by the amphibians who found them (a frog, a toad, and newts, respectively.)]]

* ''Fanfic/PokemonShadowOfTime'' notes that Pokémon Ash hatched from eggs -- Phanphy/Donphan, Scraggy, and Noibat/Noivern -- all think of Ash as 'Dad' rather than as a trainer (also applies to Togepi, but only in the sense that Togepi saw Ash as Misty's partner rather than seeing him as 'Daddy' on his own). Even aside from this, Ash's Pokémon are described as seeing each other as family, such as Noctowl and Pidgeotto briefly fighting because Noctowl sees Pidgeotto as having 'betrayed the parliament' before it's explained exactly why Pidgeot never came back, Snivy referring to Ash as her 'idiot brother', and Heracross thinking of Phanphy as a brother after retrieving his egg.
** Interestingly turns out to be defied by Rowlett; the Toucannon and Pikipek nest Rowlett lived with before Ash caught him actually ''was'' Rowlett's family, as his mother was a Dartrix who left his egg in the nest after spending time with a Trumbeak.

* Another Nuzlocke spinoff, ''Webcomic/KyNimsNuzlockeRuns: Myths of Unova'' has the InterspeciesRomance couple of Zach (Oshawott) and Laila (Petilil). Since they aren't even in compatible breeding groups, they plan on adopting after they retire from the battle circuit.

* In the backstory for ''Fanfic/SonicComicsRewriteOneChangeCanMeanANewChance'', [[WesternAnimation/SonicTheHedgehogSatAM Snively]] (or Colin, as he is called in the story) was abandoned by his family when he was two, then adopted and raised by Sir Charles Hedgehog.

* In ''Fanfic/HellsisterTrilogy'', ComicBook/{{Supergirl}} is adopted by Fred and Edna Danvers, a human couple.
* In ''Fanfic/KaraOfRokyn'', the Danvers, a human couple, not only adopt an alien teen girl but also her clone.

* In ''Fanfic/MarioAndLuigi'', the two human heroes were adopted by Toads.
* In ''Fanfic/TheSeaShadow'', Bobbery, a bob-omb, has adopted Vivian, who is a LivingShadow.

* This is recurrent in the ''Fanfic/Gensokyo20XX'' series, with Reimu, Renko, and Maribel (formerly human) being adopted by Yukari (a [[RealityWarper reality-warping]] yokai) and Chen (Nekomata) and Marisa (formerly human) being adopted by Ran and, later on, Ren ([[AsianFoxSpirit Kitsune]]). In that vein, we have Ran being adopted by Yukari.
** This is actually used to an advantage in ''Foundling''. Chen, disgruntled by Reimu at the festival, is given something of a dressing down by Yukari, reminding her that she is adopted and that, no matter what species, someone loved her, regardless if anyone wanted her. Said dressing down made her shut up.

* Invoked in ''Fanfic/PropertyOf''. In this fic, the Decepticons have tricked the Autobots into thinking that humans aren't sentient. Thus, many humans have been taken from Earth and sold as pets on Cybertron, including Sam, Mikaela, and Annabelle Lennox. Annabelle is terrified of the situation until Sam explains it to her by saying that Ironhide (her "owner") has adopted her. Later, when the Autobots learn that humans are, in fact, sentient, Ironhide plays this trope straight and starts acting like a ParentalSubstitute to Annabelle.

* In ''Fanfic/EbottsWake'', Frisk has been living with Toriel ever since they came to the Surface. Frisk finds it strange and even confidence-sapping that their human parents never showed up to reclaim them. Toriel finds it strange, too, but given that their parents seem to have been {{Abusive|Parents}}, she's of the opinion that it's for the best.

* In [[https://www.fanfiction.net/s/12149800/1/Judy-s-New-Life Judy's New Life]], foxes and bunnies can't interbreed, so Nick and Judy adopt a pair of skunk kits.
* In ''Webcomic/NeverSayGoodbye'', Judy and her wife Shay, who are a rabbit and vixen respectively, adopt a zebra boy named Rafiki and a red panda girl named Mulan.

[[quoteright:350:[[Fanfic/ShardsOfAMemory https://static.tvtropes.org/pmwiki/pub/images/tumblr_n8m9nsnyjq1t4nqtto1_1280.jpeg]]]]
[[caption-width-right:350:"[[https://masart.tumblr.com/post/91577218576/a-cat-may-look-at-a-king-by-m3ru-i-finally-got-my A Cat May Look at a King]]" by [[https://masart.tumblr.com/ masart]]]]

* Invoked in ''Fanfic/PropertyOf''. In this fic, the Decepticons have tricked the Autobots into thinking that humans aren't sentient. Thus, many humans have been taken from Earth and sold as pets on Cybertron, including Sam, Mikaela, and Annabelle Lennox. Annabelle is terrified of the situation until Sam explains it to her by saying that Ironhide (her "owner") has adopted her. Later, when the Autobots learn that humans are, in fact, sentient, Ironhide plays this trope straight and starts acting like a ParentalSubstitute to Annabelle.

[[AC:''WesternAnimation/TransformersPrime'']]

* In the [[ComicBook/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/SpiderNinja'', while Master Splinter (a mutant rat) adopted the Turtles like in canon, here he also [[ImTakingHerHomeWithMe found]] and adopted the orphaned [[GenderFlip Petra Parker]]. The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

Toriel, a [[OurMonstersAreDifferent boss monster]], adopting Frisk, a human, is a very common occurrence in ''Undertale'' fan works.

* In the [[ComicBook/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', while Master Splinter (a mutant rat) adopted the Turtles like in canon, here he also [[ImTakingHerHomeWithMe found]] and adopted the orphaned [[GenderFlip Petra Parker]]. The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

* In the [[Franchise/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', while Master Splinter (a mutant rat) adopted the Turtles like in canon, here he also [[ImTakingHerHomeWithMe found]] and adopted the orphaned [[GenderFlip Petra Parker]]. The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

* This is recurrent in the ''Fanfic/Gensokyo20XX'' series, with Reimu, Renko, and Maribel (formerly human) being adopted by Yukari (a [[RealityWarper reality warping]] yokai) and Chen (Nekomata) and Marisa (formerly human) being adopted by Ran and, later on, Ren ([[AsianFoxSpirit Kitsune]]). In that vein, we have Ran being adopted by Yukari.

* Doubling as HappilyAdopted, the basis of ''[[Fanfic/LuzClawthorne The Luz Clawthorne Saga]]'' is that Eda, a witch, adopted Luz, a human, as a baby.

* In the [[Franchise/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', [[GenderFlip Petra Parker]] (a human) is adopted by Master Splinter (a mutant rat) and raised alongside his four adopted sons (mutated turtles). The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

* The ''Anime/PokemonTheSeries'' fic ''Fanfic/PokemonShadowOfTime'' invokes this, as it is noted that those Pokemon Ash hatched from eggs- Phanphy/Donphan, Scraggy and Noibat/Noivern- all think of Ash as ‘Dad’ rather than as a trainer (also applies to Togepi, but only in the sense that Togepi saw Ash as Misty’s partner rather than seeing him as ‘Daddy’ on his own). Even aside from this, Ash's Pokémon are described as seeing each other as family, such as Noctowl and Pidgeotto briefly fighting because Noctowl sees Pidgeotto as having 'betrayed the parliament' before it's explained exactly why Pidgeot never came back, Snivy referring to Ash as her 'idiot brother', and Heracross thinking of Phanphy as a brother after retrieving his egg.

* In the [[Franchise/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', [[GenderFlip Petra Parker]] (a human) is adopted by [[ParentalSubstitute Master Splinter]] (a mutant rat) and raised alongside his four adopted sons (mutated turtles). The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

* In ''[[https://www.fanfiction.net/s/5779581/1/The-Lion-the-Cat-and-the-Turtles The Lion, the Cat and the Turtles]]'', [[Franchise/TeenageMutantNinjaTurtles Splinter]] and [[Literature/ChroniclesOfNarnia Aslan]] each acknowledge that Susan is Aslan's daughter just as the Turtles are Splinter's sons despite the species difference.

* ''Fanfic/CanIKeepHim: Hiccup was raised (as a dragon) alongside Toothless by the Elder Stormcutter.

* In the [[Franchise/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', [[GenderFlip Petra Parker]] (a human) is adopted by Master Splinter (a mutant rat) and raised alongside his four adopted sons (mutated turtles). The five teens all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.

[[AC:''{{Franchise/Danganronpa}}'']]
* ''Fanfic/AsOldAsTime'': Angie Yonaga is the head priestess of Atua and think of herself as his servant, but Atua sees their relationship this way and refers to her as his daughter.

* In the [[Franchise/SpiderMan Spiderverse]] and [[Franchise/TeenageMutantNinjaTurtles TMNT]] crossover ''Fanfic/{{Spider-Ninja}}'', Petra Parker (a human) is adopted by Master Splinter (a mutant rat) and raised alongside his four adopted sons (mutated turtles). The five siblings all [[HappilyAdopted acknowledge Splinter as their father and each other as siblings]], often going out of their way to protect one another.