- Absurdly Sharp Claws
- Ass Kicks You
- Bare-Fisted Monk
- Beware My Stinger Tail
- Bloody Murder
- Breath Weapon
- Combat Tentacles
- Feather Flechettes
- Femme Fatalons
- Goomba Stomp
- Horn Attack
- Make Me Wanna Shout
- Man Bites Man
- Power Pincers
- Prehensile Hair
- Razor Wings
- Rolling Attack
- Sword and Fist
- Super Spit
- Tail Slap
- Use Your Head
- Wolverine Claws
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Anime and Manga
- Dozens of examples can be found in the released forms of Arrancars in Bleach. They carry around swords, but in "resurreccion" mode most arrancars' zanpakuto become natural weapons. They may have claws, pincers, tentacles, wings, tails, or horns that will be used to fight.
- Garyuu of Magical Girl Lyrical Nanoha Striker S, who in addition to his speed and strength, is capable of firing mana bullets as part of his biological functions, has retractable blades up the wazoo, and combat tentacles that could slice through Barrier Jackets. These, together with his other natural abilities and human-level intelligence, make him the equivalent of a skilled mage and one of the strongest amongst of Lutecia's insect summons.
- One X-Men villain, Riptide, could secrete hardened resin from his skin and fire it as projectile weapons at his foes.
- Resident Evil: The Licker mutant had huge claws that could rip through solid metal and inflict grievous wounds. Its bite attack was also fairly impressive.
- The xenomorphs of the Alien series. Extensible teeth, tremendously powerful arms, acid for blood, prehensile tail. Par for the course, since they were created as Living Weapons in the expanded universe.
- The bug aliens of the Star Ship Troopers movie series were able to poop city-destroying plasma across interstellar distances; the novel version built weapons just like people do.
- Lots in Animorphs. Andalites have a scythe blade at the end of their tails, and Hork-Bajir are covered head to toe in blades and spikes. Humans are considered particularly vulnerable in large part because we don't have any, and the protagonists all acquire various animal morphs suitable for close combat, e.g. tiger, grizzly bear, or rhino.
- Bit of a subversion on the Hork-Bajir — despite appearing to be a walking knife factory, they're a peaceful race and use the blades to cut and eat tree bark... but this made them a target for enslavement by the Yeerks.
- Many flavors of moreaus have them, mostly claws and teeth. Angel Lopez' legs may count; as an engineered rabbit the size of a small human, she has a kick that can shatter bones.
- Happens frequently in Redwall, since most animals have at least some natural defenses they can bring to bear. Examples include:
- Redwall: Constance the badger who uses her sheer bulk to overpower the cutlass-armed Redooth. Asmodeus Poisonteeth, being an adder, and therefore legless, has no choice but to use his fangs and coils as his main weapons. And the sparrows attack with beak and talon alone.
- Mossflower: Tsarmina, unarmed and confronted by a fully armed and armoured Martin the Warrior, attacks him with only her teeth and claws. Since she's a wildcat and he's a mouse, she damn near kills him anyway.
- Lask Frildur and his monitor lizards in Pearls of Lutra who use only their claws and fangs.
- Rakkety Tam has Gulo the Savage, a wolverine who fights using only his claws, teeth, and size.
- The tripodal Puppeteer race of Larry Niven's "Known Space" universe have hooves on their rear legs. Although pacifist by nature, one badly-frightened Puppeteer in "Ringworld" takes a level in Badass when he instinctively uses his rear hoof to kick a man's heart through his spine.
- The Trope Namer is Dungeons & Dragons, where "natural weapon" is a special ability for monsters.
- The Tyranids from Warhammer 40,000. They not only have various types of claw weapons, several units have organic projectile weapons integrated into their bodies.
- Lots of them in GURPS. Innate Attack is the most common (since it can represent thousands of different things) but the list includes: Strikers, Claws, Teeth and Spines.
- Present and very desirable in the Legend System. They gain something of a power boost from the fact that they - and, by extension, their properties - are always active and available even with another weapon drawn. This allows you to have an active weapon loaded to the gills with defensive properties while still having a strong attack freely available. Most tracks that grant them are also built around supporting them.
- Everyone in Ironclaw has at least one, how effective it is depends on their brawling skill and their species stat.
- Subverted by the Vorox in Fading Suns. They are ten-feet-tall six-limbed alien bear-lion-wolves, but many of them shave their claws as a mark of being "civilized".
- In Myriad Song some Legacies can take gifts that give them natural weapons. Adhilians can have a blade on one of their tails. Elvers can constrict or generate electricity. Ishato can have stinging tentacles. Morphirs can develop thorns, sticky sap, or disorienting spores. Rhax a poisonous bite and/or webs. Towsers can have a toxic bite and hardened alloy claws with the same gift.
- Hc Svnt Dracones: All Vectors have a bite attack and a tail attack, bites are fairly weak but harder to parry than fists and deal lethal damage, while tail attacks only distract the enemy from parrying except reptiles whose tails are heavy enough to deal some nonlethal damage. Lateral Vectors also have claws. And the Reclaimed Venom surgery adds venom to bite attacks.
- In Rocket Age many creatures have natural weapons, including the Venusians. It is a trait in the character and monster creation system and can be taken to either give a creature something like Absurdly Sharp Claws or Super Spit.
- In The Elder Scrolls series, the cat-like Khajiit get a bonus to their unarmed skill because of their claws.
- A particularly popular mod extends this to Argonians, as well - and boosts the effect for both races with each gain in level.
- Taokaka and the rest of the Kaka clan from BlazBlue have organic magitek claws that can absorb and use Seither, something for which most of the other characters need weapons.
- In Half-Life, Xen aliens have "natural" weapons galore. Vortigaunts can produce huge bolts of directed electricity. Grunts have hornet guns, which seem to be some sort of insect hive that they've managed to turn into a weapon. Controllers can shoot balls of energy (ball lightning?) and the Nihilanth shoots these as well as teleport portals.
- In Opposing Force, you have the Race X aliens: pit drones, which shoot some sort of biological darts from their forehead, the shocktroopers, which like the Xen grunts use two more forms of biological weapons (shock roaches and spore launchers), voltigores, which like Xen vortigaunts can shoot massive charges of electricity, the pit worm, which can fire a laser from its eye, and the gene worm, which can fire a chemical stream from its mouth.
- The Zerg in StarCraft are made of this trope... literally.
- The psi-blades of Protoss Zealots are just that, focused psionic energy that that slice through anything.
- The Laguz in Fire Emblem Tellius and Mamkutes elsewhere in the Fire Emblem series. The former use claws, beaks, etc. while the latter use Breath Weapons.
- Several species of Pokémon base moves around their anatomy. Bulbasaur is famous for moves like Vine Whip and Bullet Seed, which use the bulb on its back; Octillery's signature move is Octazooka, which uses its mouth as an artillery piece, and so on. A full list would take up the entire page.
- Interestingly averted in Knights of the Old Republic. Wookiees have claws and they use them as tools, but are not allowed to use them as weapons, because only animals do that. Any wookie that fights with his claws is branded a mad-claw and banished.
- Baraka, from Mortal Kombat, is a member of the Tarkatan race, which have retractable blades in their arms. These blades serve many violent purposes, such as chopping off heads and impaling Torsos.
- Pretty much any creature more powerful than a zombie in Resident Evil will have these; various formerly human T-Virus mutants (from Crimson Heads to Tyrants) tend to grow claws as they mutate. G-Virus and Nemesis mutants gain Combat Tentacles. Las Plaga have their own natural weapons when they leave their human hosts. Animals infected by any of these naturally keep their own examples as well.
- All of the weapons you can get in Evolva. The genohunters' limbs (sometimes the neck or the back) transform each time you select a weapon, as you shoot at the enemies using the transformed limb.
- In Castle Cat the titular cat can shoot cannonballs out of his head.
- Some of the anthropomorphic animals in Darwin's Soldiers have natural weapons. Most of the time, it takes the forms of teeth, claws and muscle but snakes in this universe possess working venom glands.
- Similarly, the characters from "Dogfight" count as this. Using claws, fangs, horns, and hooves for unique martial arts fights.
- Real Life: The cone shell can fire a neural-toxic laced harpoon. Seriously.
- Skunks have a well-known natural chemical weapon, spraying a substance that smells so foul, other animals fear it.
- Bombardier Beetles take that Up to Eleven, spraying a boiling chemical to severely burn targets.
- The Pistol Shrimp has the sonic equivalent of a .22 caliber bullet ready to fire as its main weapon (It's been known to shoot its way out of aquariums this way). Mantis shrimps have a similar mechanism that is used in the same way.
- Venomous snakes and monitor lizards have natural Poisoned Weapons.
- Sawfish are so named for their barbed, sword shaped noses which they use to dig up and then impale fish and small crustaceans.
- Most of The Herculoids have at least one of some kind.