'''Basic Trope''': A human has sex with an animal, and the act is portrayed as disgusting.
* '''Straight''': Bob has sex with Alice. Alice is a bitch... ''literally''. Bob is shamed by the other characters for this and the narrative overall treats the act as abhorrent.
* '''Exaggerated''':
** Bob is the BigBad of the SexIsEvil variety. His EstablishingCharacterMoment is when he has an orgy with an entire farm!
** Bob is treated as worse than a serial killer for expressing attraction to an anime catgirl.
* '''Downplayed''':
** Bob has no issues having sex with a centaur despite the body shape, but refuses to do similar acts with a horse who wouldn't know any better.
** Bob breeds animals and is a little too keen on observing the process. The narrative treats this as odd, but far from the most perverted thing.
* '''Justified''':
** Bob is a zoophile who is BetterWithNonHumanCompany.
** Bob [[HumanityEnsues was a dog before he was a human]]. Despite it squicking out people, to him it is far more normal.
** Alice is a TalkingAnimal or FunnyAnimal; Strange, but not amoral.
* '''Inverted''':
** In a serious case of DeliberateValuesDissonance having sexual relationships with someone sapient -- and your own species no less is considered disgusting compared to sex with animals.
** An animal rapes a horrified human.
* '''Subverted''':
** Bob is rumored to ''like'' dogs. With further investigation, it's found that he does like dogs, but not in ''that'' way. He spends a lot of time with them, but that's it.
** Bob is referred to as a pervert for having sex with unicorns. It turns out that they are fully sapient and capable of communicating, making it more somewhat extreme xenophilia rather than bestiality despite the uncomfortable resemblances.
** Bob has sex with a dog, which is initially presented as depraved, before the narrative switches to a more neutral or positive stance on the act.
* '''Double Subverted''':
** But he gets drunk one night and [[WhatDidIDoLastNight wakes up naked, with his dog looking at him funny and a brand-new wedding ring]].
** The narrative switches back to condemning interspecies intercourse.
* '''Parodied''':
** Bob marries his dog, Alice… and it's legally binding.
** Bob is under arrest for [[NoodleIncident inappropriate behavior with underage turtles]].
** Bob has sex with a ''jellyfish''.
* '''Zigzagged''':
** Some cases of interspecies intercourse are treated as disgusting, some are treated more neutrally, and even some are treated positively.
** Bob is in a relationship with a catgirl. Given that she does not speak, it's not clear if she has human sentience or not.
* '''Averted''': Bob does not engage in any sexual behavior with animals. He is said to enjoy the company of his dog more than humans, but it's clearly shown that just means he enjoys walking her and playing fetch.
* '''Enforced''':
** RuleOfFunny.
** Alternatively, we need to show that [[BlueAndOrangeMorality Bob has no regard for laws, social norms and animal moralities]].
** The work is a biography and it is a documented historical fact that Bob regularly had sex with animals.
** "[[RapeIsASpecialKindOfEvil Rape]] and [[BadPeopleAbuseAnimals animal abuse]] are really heinous. Why don't we combine the two."
* '''Lampshaded''': "I hear Bob is a real [[DoubleEntendre dog-lover]]."
* '''Invoked''': For some reason, Bob wants people to think of him as a freak and starts trying to initiate a sexual encounter with a dog in a place where he'll likely be caught.
* '''Exploited''': Knowing that Bob is a zoophile, a major villain tries to lure him into the zoo.
* '''Defied''':
** Bob thinks this is {{Squick}}, and does not have sex with Alice. He just takes her for a walk.
** Bob controls his zoophilic urges, and finds a way to redirect his energy away from animals.
** A law was passed making bestiality illegal. The fear of being imprisoned keeps Bob in check.
* '''Discussed''': When Bob complains about his sexual frustration, his friend jokes about having to keep him away from her dog.
* '''Conversed''': "Sex with animals… disgusting."
* '''Implied''': Bob is the father of a CatGirl daughter. Her mother is never seen, but occasionally mentioned, mainly in ways that imply [[ArtisticLicenseBiology she was way more housepet than civilized sentient being]] (e.g. "You know what your mother always used to say... Meow!").
* '''Deconstructed''': This one ''really'' falls into the DontTryThisAtHome category. Besides the [[MoralEventHorizon ethical and legal implications]], there is also additional risk of disease, and it could hurt the animal and/or you.
* '''Reconstructed''': [[RousseauWasRight The majority of the population finds bestiality unthinkable to begin with, and the rest manage to come to terms with themselves through professional counseling or other such means.]]
* '''Played For Drama''': Bob is arrested for bestiality, and embarrasses his family when word gets out about ''why'' he was arrested.
* '''Played For Laughs''':
** Bob is actually an ExtremeOmnisexual [[BlueAndOrangeMorality who would have sex with everything equally]].
** [[MakeTheDogTestify Alice and several other animals testify against Bob in court.]]
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%% Optional items, added after Conversed, at your discretion: