'''Basic Trope''': An animal character has physical traits that should only apply to whichever gender the character is not.
* '''Straight''': Joey, the male kangaroo, has a pouch.
* '''Exaggerated''':
** His best friends comprise a bull with an udder, a doe with antlers, a peahen with colorful feathers, a lioness with a mane, etc.
** Alternatively, it has a joey in it.
* '''Downplayed''': Joey has no pouch, yet is greyish-blue in color, a trait of female kangaroos (assuming Joey is a red kangaroo by species).
* '''Justified''':
** Joey is a {{hermaphrodite}}.
** Alternatively, he's actually part of a kangaroo-like alien race whose males have pouches.
* '''Inverted''': Both male and female are pouchless.
* '''Subverted''': Joey is actually a female who just acts masculine; everyone presumes her to be a male.
* '''Double subverted''': Joey actually ''is'' a pouched male; not wanting to be made fun of because of it, he convinces everyone that he's actually a manly female.
* '''Parodied''':
** Joey has not only a pouch, but also [[MixAndMatchCritters an udder, antlers, colorful feathers, mane, and/or any other trait linked only to one sex of a given species.]]
** Alternatively, Joey is a scientific experiment capable of [[MisterSeahorse male pregnancy]].
* '''Zig Zagged''': Joey was born female but had a sex-change operation, and never had the pouch removed. However, his brother was born male and has a pouch. And their other brother doesn't.
* '''Averted''': Only the female kangaroos have pouches.
* '''Enforced''': "Pouches are [[RuleOfCool cool]]."
* '''Lampshaded''': "Why ''do'' I have a pouch, anyway? I'm pretty sure I'm a male!"
* '''Invoked''': Joey's pouch was surgically implanted, or resulted from him taking female hormones.
* '''Exploited''': ???
* '''Defied''': A mad scientist makes a race of kangaroos, but explicitly makes sure that the males don't have pouches.
* '''Discussed''': "I thought that kangaroo was the little joey's mom, but it turns out it's his dad."
* '''Conversed''': "Isn't it weird when books have male kangaroos with pouches? What's the deal with that?"
* '''Deconstructed''': Joey is a male kangaroo with a pouch. [[EvilutionaryBiologist Biologists]] notice this and capture him for and force him into an exhausting scientific study.
* '''Reconstructed''': One of the scientists is [[CoolOldLady Jane Goodall]], who, despite being an expert on chimpanzees and having not a lot do do with kangaroos, takes an interest in Joey and treats him nicely and eventually sets him free.
* '''Played for Laughs''':
** Joey "cross-dresses" by putting on a fake pouch.
** Alternatively, he uses his pouch as a pocket.
* '''Played for Drama''': Joey undergoes a female-to-male sex-change operation, but something goes wrong during the surgery, so that the pouch can't be removed without serious negative effects.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???