Earth is a planet literally teeming with organic life forms. Millions of genera, of all shapes and sizes, inhabit the planet, and a [[Transformer|Cybertronian]] might scan any of them for a potential [[alternate mode]]. Some genera, however, are extremely popular with Cybertronians.

'''TFWiki.net: The Transformers Wiki''' has certain requirements for an animal to be listed here. There must be at least '''three unique toy molds''' (or in-fiction appearances, in the case of non-toy bodies/characters) that share the beast mode. There must also be at least '''one unique character per mold'''—a single character getting numerous revamps in similar bodies over the years would not count as a "popular mode."

Each mold is listed on its own line, with all different-character decoes/[[Retool|retools]] on the same line. The list is organized in chronological order of toy release.

:''See also'': [[Popular Earth vehicle alternate modes]], [[Non-vehicle non-beast alternate modes]], [[General Motors]]

==Arthropods==
===Insects===
====Stag beetles (family Lucanidae)====
[[Image:G1 Chopshop toy.jpg|right|250px|thumb|Not [[Pokeformers|Pinsir]].]]
* [[Shrapnel (G1)]] / [[Zaptrap]]
* [[Chop Shop]]
* [[Insecticon (BW)]]
* [[Beetle]]
* [[Scarem]]

====Scarabs and rhinoceros beetles (family Scarabaeidae)====
* [[Bombshell (G1)|Bombshell]] / [[Bombshell (SG)| Bombshell (Shattered Glass)]] / [[Salvo]]
* [[Barrage (Insecticon)]]
* [[Ram Horn]] / [[Motorarm (BWII)]]
* [[Needler]]
* [[Insecticon (Energon)]]

====Grasshoppers and locusts (order Caelifera)====
* [[Kickback (G1)]] / [[Kickback (SG)|Kickback (Shattered Glass)]] / [[Shothole]] / [[Non-Biological Extraterrestrial|NBE 125]]
* [[Ransack (G1)]]
* [[Scourge (BW)]]

====Wasps and ants (order Hymenoptera)====
[[Image:Waspinatortelemocha.jpg|right|thumb|250px|A rare shot of Waspinator not getting blown up.]]
* [[Waspinator]] / [[Starscream (G1)]] {{storylink|Transformers: Beast Wars Transmetals (N64)}}
* [[Buzz Saw]]
* [[Dirge (BWII)|Dirgegun]]
* [[Injector]] / [[Rartorata]] (partially)
* [[Inferno (BW)]] / [[Antagony (BW)]]
* [[Scavenger (BW)]]
* [[Buzzer-Bot]] / [[Billy (Go-Bots)]]
* [[Wasp|Waspinator (Animated)]]

===Spiders===
''Black Widow Spiders'' (''Latrodectus mactans'')

* [[Blackarachnia (BW)]]
* [[Arcee (G1)]]
* [[Crystal Widow]]
* [[Blackarachnia (Animated)]]

===Scorpions===
[[Image:BWtoy-ScorponokMega.jpg|right|thumb|250px|Willing to trade his bee for a city mode.]]
* [[Double Punch]]
* [[Pincher]]
* [[Poison Bite]]
* [[Scorpia]]
* [[Scorponok (G1)]] / [[Scorponok (G1)|BlackZarak]]
* [[Scorponok (BW)]] / [[Sandstorm (BW)]]
* [[Quickstrike (BW)]] (partially)
* [[Scorpulator]]
* [[Scorponok (Energon)]] / [[Scorponok (Energon)|Dark Scorponok]]
* [[Scorponok (Movie)]]

===Crabs===
[[Image:BW-BWN-toy Razorclaw-Rockbuster.jpg|right|thumb|250px|When all the world is metrosexual, the Crab People will finally reign supreme!]]
* [[Covenant|Cancix]]
* [[Octopunch (G1)|Octopunch]]
* [[Rampage (BW)]] / [[Shokaract]]
* [[Razorclaw (BW)]] / [[Rockbuster]]
* [[Razor-Sharp]]
* [[Crab spy]]

==Mythical Creatures==
===Dragons===
[[Image:Cryotekridtoy.jpg|right|250px|thumb|Moonlights as a Yu-Gi-Oh! card.]]
* [[Mechatron]]
* [[Megatron (BW)]]
* [[Cryotek (RID)|Cryotek]]
* [[Doublecross]]
* [[Deathsaurus (Victory)|Deathsaurus]] / [[Deathsaurus (SG)| Deathsaurus (Shattered Glass)]]
* ''Likely'' [[Esmeral (Victory)|Esmeral]] / [[Esmeral (SG)| Esmeral (Shattered Glass)]]
* [[Galvatron (BWII)]] / [[Unicron]]
* [[Nightscream (Classics)]] / [[Dragoyell]] / [[Brimstone (Universe)]]
* [[Noble|Savage]]
* [[Snapdragon (G1)|Snapdragon]]
* [[Hun-Gurrr]]
* [[Megatron (RID)]]
* [[Scourge (Cybertron)]] / [[Trypticon (G1)|Trypticon]] (Classics) / [[Bruticus (RID)]]

==Fishes==

==Chondrichthyes==
===Rays===
''Manta Ray'' (''Manta birostris'')
[[Image:BM-toy Hammerstrike.jpg|right|250px|thumb|Starring in the next ''Shark Attack'' movie.]]
*[[Seawing (G1)|Seawing]] / [[Kraken]] / [[Terrormander]]
*[[Manta Ray (BW)]]
*[[Depth Charge (BW)]]

===Sharks===
''Hammerhead shark'' (genus ''Sphyrna'' and others)

*[[Cybershark]] / [[Starscream (BWII)|Hellscream]] / [[Overbite (Universe)]]
*[[Air Hammer]] (partially)
*[[Cybershark|Hammerstrike]] / [[Sharkticon (G1)]] {{storylink|Betrayal}}

==Reptiles==
===Crocodylians===
[[Image:BWtoy-MegatronBasic.jpg|right|250px|thumb|Don't flush him down the toilet.]]
''American alligator'' (''Alligator mississippiensis'')

* [[Skullcruncher]]
* [[Megatron (BW)]]
* [[Terragator]] (partially)
* [[Soundwave (BW)]]
* [[Gatoraider]]

===Turtles===
''Snapping turtles'' (genera ''Chelydra'' and ''Macroclemmys'')

* [[Snaptrap (G1)|Snaptrap]] / [[Turtler]] / [[Halfshell]]
* [[Snapper]]
* [[Terragator]] (partially)

===Snakes===
''Cobras'' (genus ''Naja'' and others)

* [[Cohrada]]
* [[Quickstrike (BW)]] (partially)
* [[Night Viper]] (even though vipers aren't cobras)
* [[Deathcobra's Breast Animal]] (presumably)

===Lizards===
* [[Geckobot]]
* [[Sky Shadow (BW)]] / [[Drancron]] (partially)
* [[Buzzclaw (BW)]] / [[Buzzclaw (G1)]] / [[Dirge (Timelines)]] / [[Virulent Clone]] / [[Repugnus (Universe)]] (partially)
* [[Wreckloose (Cybertron)]]
* [[Iguanus (BW)]] / [[Crazybolt]]
* [[Reptilion]]

===Dinosaurs===
====''Tyrannosaurus''====
[[Image:BM T-Wrecks toy.jpg|right|250px|thumb|"Down, Dino. Down, boy! Down, boy! Down!!"]]
* [[Grimlock (G1)]] / NBE 08
* [[Overkill (G1)]] / [[Overkill (SG)]]
* [[Gōryū|Gōryū (Victory)]] (pretender shell only)
* [[Megatron (BW)]] / [[T-Wrecks]]
* [[Trypticon (G1)]] / [[Megastorm|Gigastorm]]
* [[Tyrannitron]]
* [[Terrorsaur (Classics)]] / [[Gnashteeth]] / [[Chromebite]] / [[Ransack (Universe 2008)]] / [[Dualor (DOTM)]]
* [[Predacon (Armada)]]
* [[Grimlock (Energon)]]
* [[Megatron (Armada)|Megatron (Cybertron)]] / [[Cindersaur]]
* [[Grimlock (Animated)]]
* [[Grimlock (SG)]]
* [[Goryu (SG)]]

====''Triceratops''====
* [[Slag (G1)]]
* [[Kakuryū]] (pretender shell only)
* [[Guiledart]] / [[Triceradon (BM)]] / [[Triceradon (Dinobots)]]
* [[Knockdown (Classics)]] / [[Ironlunge]] / [[Stockade (Universe 2008)]] / [[Triceradon (DOTM)]]
* [[Snarl (Animated)]]

====''Stegosaurus''====
[[Image:G1Snarl toy.jpg|220px|thumb|"[[Slag (G1)|Slag]] stole my name." :'(]]
* [[Snarl (G1)]]
* [[Slugfest (G1)]] / [[Slugfest (SG)|Slugfest (Shattered Glass)]]
* [[Doryū]] (pretender shell only)
* [[Saberback]] / [[Striker]] / [[Snarl (Dinobots)]]
* [[Hacksaw]]

====''Apatosaurus''====
* [[Sludge (G1)]]
* [[Saur]]
* [[Rairyū]] (pretender shell only)
* [[Zaur]]

====''Velociraptor''====
* [[Dinobot (BW)|Dinobot]]
* [[Dinobot II]] / [[Rapticon]]
* [[Grimlock (G1)]] / [[Thrust (BWII)|Thrustor]] / [[Grimlock (Dinobots)]]
* [[Razor Claw]]
* [[Reptron (Go-Bots)]] / [[Dino-Bot]] / [[Greg (Go-Bots)]] / [[Reptron (Universe)]]

===Pterosaurs===
====''Pteranodon''====
[[Image:Cybertron Brimstone toy.jpg|right|200px|thumb|]]
* [[Swoop (G1)]]
* [[Graphy]]
* [[Yokuryū]] (pretender shell only)
* [[Terrorsaur (BW)|Terrorsaur]] / [[Fractyl]] / [[Lazorbeak]] / [[Hydra (BWN)|Hydra]] / [[Terranotron (Dinobots)]]
* [[Terranotron (BM)]] / [[Terrorsaur (Armada)]] / [[Ravenus]]
* [[Reptix]] / [[Windrazor (Universe)]] / [[Rav (DOTM)]]
* [[Swoop (Energon)]]
* [[Brimstone (Cybertron)]] / [[Swoop (SG)|Swoop (Shattered Glass)]]
* [[Swoop (Animated)]]

==Birds==
''Eagles'' (order Accipitriformes)
* [[Divebomb (G1)]]
* [[Squawktalk]]
* [[Eaglebreast]]
* [[Silverbolt (G1)]] / [[Skywarp (BWII)]]
* [[Silverbolt (BW)]] / [[Windrazor (BW)]] (partially)
* [[Screech (Action Master)|Screech]]
* [[Dreadwing (Classics)]] / [[Wedge Shape]] / [[Longview (Universe)]]
* [[Divebomb (SG)| Divebomb (Shattered Glass)]]

''Condors'' (genera ''Vultur'' and ''Gymnogyps'')

* [[Laserbeak (G1)]] / [[Buzzsaw (G1)]] / [[Garboil (G1)]] / [[Sundor]] / [[Non-Biological Extraterrestrial|NBE 57]] / [[Laserbeak (SG)|Laserbeak (Shattered Glass)]] / [[Buzzsaw (SG)|Buzzsaw (Shattered Glass)]]
* [[Silverbolt (BW)]]
* [[Laserbeak (Cybertron)]] / [[Hell Buzzsaw]] / [[Blockrock]]
* [[Booster X10]] / [[Night Beat 7]]
* [[Laserbeak (Animated)]] / [[Buzzsaw (Animated)]] / [[Garboil (Animated)]] / [[Sunder]]

''Hawks and falcons'' (order Falconiformes)
[[Image:Airazorbwtfmtoy1.jpg|right|thumb|250px|It's a bird! It's a plane! It's both!]]
* [[Hawkbreast]]
* [[Wingspan]]
* [[Doubledealer]] / [[Clouder|Doubleclouder]]
* [[Airazor (BW)]]
* [[Tigerhawk]] / [[Razorclaw (Universe)]] (partially)
* [[Air Hammer]] (partially)
* [[Sights]]
* [[Airazor (Armada)]]
* [[Divebomb (Energon)]] / [[Blackout (Terrorcon)|Blackout (Energon)]]

==Mammals==
===Bats===
[[Image:G1Ratbat toy.jpg|right|250px|thumb|He tried to get a recurring role in ''Batman Beyond''.]]
* [[Kōmoribreast]]
* [[Mindwipe (G1)|Mindwipe]]
* [[Nightscream (BM)]]
* [[Nightshriek]] / [[True One]]
* [[Noctorro]] (partially)
* [[Optimus Primal]] / [[Onyx Primal]]
* [[Ratbat (G1)]] / [[Ratbat (SG)|Ratbat (Shattered Glass)]] / [[Wingthing (G1)|Wingthing]]
* [[Skar]] / [[Clouder]]
* [[Sonar (BW)]]
* [[Soundwave (BW)]]
* [[Megatron (RID)]]
* [[Ratbat (Animated)]]

===Ursines===
'''Bears''' (genus ''Ursus'')

* [[Chainclaw (G1)]]
* [[Grizzly-1]] / [[Polar Claw]] / [[Survive]]
* [[Icebird]]
* [[Kuma Kinkin]]

===Canines===
'''Wolves / Dogs''' (''Canis lupus'')
[[Image:BW-toy WolfangMaximal.jpg|right|thumb|250px|Timber from ''G.I. Joe'' Crossovers...if such a toyline existed.]]
* [[Carnivac (G1)|Carnivac]]
* [[Sinnertwin (G1)|Sinnertwin]]
* [[Wolfang (Maximal)]] / [[Wolfang (Predacon)]] / [[K-9]] / [[BB|Max-B]]
* [[Weirdwolf]]
* [[Sixshot]]
* the [[Cub]]
* [[Silverbolt (BW)]] / [[Windrazor (BW)]] (partially)
* [[Quickstrike (BM)]]
* [[Noble]]
* [[Overbite (Classics)]] / [[Gredator]] / [[Razorclaw (SG)|Razorclaw (Shattered Glass)]] / [[Scavenger (Universe 2008)]]
* [[Bruticus (RID)]]
* [[Snarl (Cybertron)]]
* [[Beast-Bot|Preditron]]
* [[Steeljaw (DOTM)]]

===Felines===
'''Jaguars''' (''Panthera onca'')

* [[Ravage (G1)]] / [[Glit]] / [[Howlback (G1)]] / [[Ravage (SG)|Ravage (Shattered Glass)]]
* [[Panther]]
* [[Jaguarbreast]]
* [[Battle Ravage]] / [[Command Ravage]]
* [[Beast-Bot|Beast-Bot II]]

'''Tigers''' (''Panthera tigris'')
[[Image:Tigatron-HasbroToy.jpg|right|250px|thumb|Tigertron after visiting a tanning salon.]]
* [[CatSCAN]]
* [[Rampage (G1)]]
* [[Snarl (Classics)]] / [[Apexus]] / [[Snow Cat (Universe)]] / [[Rampage (SG)|Rampage (Shattered Glass)]] / [[Catilla (DOTM)]]
* [[Tigerbreast]]
* [[Toraizer]]
* [[Tigatron]]
* [[Tigerhawk]] / [[Razorclaw (Universe)]] (partially)
* [[Bantor (BW)]] (partially)
* [[Tigertron]] / [[George]]
* [[Stripes]]

'''Lions''' (''Panthera leo'')

* [[Angela]] / [[Dark Eggleo]] / [[Eggleo]]
* [[Lio Convoy]] / [[Black Lio Convoy]]
* [[Lionbreast]]
* [[Leonicus]]
* [[Prowl (G1)]] / [[Lio Junior]]
* [[Razorclaw (G1)]]
* [[Lionizer]]
* [[Snarl (BM)]] / [[Alpha Trion (G1)]]
* [[Lione]]
* [[Steeljaw (G1)]] / [[Steeljaw (SG)]] / [[Nightstalker]]
* [[Under-3]]
* [[Victory Leo]]
* [[Overhaul (Cybertron)|Leobreaker]] / [[Nemesis Breaker]]
* [[Steeljaw (Animated)]]

'''Cheetahs''' (''Acinonyx jubatus'')

[[Image:GBCheetorBioCard.jpg|right|200px|thumb|]]
* [[Cheetor (BW)]]
* [[Che]]
* [[Cataclysm (BW)]] / [[Cheetor (Armada)]]
* [[Cheetor (Go-Bots)]] / [[Chuck (Go-Bots)|Chuck]]

===Elephants/Mammoths===
* [[Shuffler]]
* [[Ironhide (G1)]] / [[Santon]]
* [[Torca]] / [[Elephorca]] (partially)
* [[Big Convoy]] / [[Black Big Convoy]] / [[Nemesis Prime (Universe)|Nemesis Prime (Universe 2003)]]
* [[Megatron (RID)|Galvatron (RID)]] / [[Deathsaurus (Victory)]]

===Equines===
* [[Battle Unicorn]] / [[Magna Stampede]]
* [[Dropshot (Armada)]] / [[Dropshot (SG)|Dropshot (Shattered Glass)]]
* [[Mach Kick]]
* [[Strada]]

===Rhinos===
[[Image:Transmetal rhinox toy.jpg|right|250px|thumb|Just when you thought a rhino's skin couldn't get any tougher,...]]
* [[Headstrong]]
* [[Ramhorn (G1)]]
* [[Rhinox (BW)]]
* [[Stranglehold]]
* [[Greatshot]]
* [[Hornbreast]]
* [[Top-Heavy]]
* [[Fire Beast]]
* [[Rhino]]
* [[Backstop (Cybertron)|Backstop]]
* [[Rhinox (Armada)]]
* [[Ramhorn (Animated)]]

===Bovids===
[[Image:Horribull bullhorn toy.jpg|right|250px|thumb]]
* [[Tantrum]]
* [[Noctorro]] (partially)
* [[Horri-Bull]]
* [[Longhorn (BM)]]
* [[Bonecrusher (BW)]] / [[Bighorn]]
* [[Bisonbreast]]
* [[Ramulus]] / [[Longhorn (Universe)]]

===Primates===
'''Gorillas''' (''Gorilla gorilla'')

* [[Apeface]]
* [[Apelinq]]
* [[Beastbox (G1)|Beastbox]]
* [[Optimus Primal]]
* [[Primal Prime]]
* [[Optimus Prime (Armada)]]
* [[Beast-Bot|Gorillabot]] / [[Max]] / [[Beast-Bot]] / [[Gorilla-Bot]]

'''Humans''' (''Homo sapiens'')
[[Image:PretenderStarscream toy.jpg|right|250px|thumb|"I'm not an animal! I'm a <strike>human being</strike> Pretender shell!"]]
* [[Alice]]
* [[Bumblebee (G1)/toys|Bumblebee (G1)]] (pretender shell only)
* [[Cloudburst]]/[[Phoenix (Masterforce)]] (pretender shell only)
* [[Crossblades (G1)]] (pretender shell only)
* [[Doubleheader]] (pretender shell only)
* [[Grimlock (G1)/toys|Grimlock (G1)]] (pretender shell only)
* [[Groundbreaker]] (pretender shell only)
* [[Jazz (G1)/toys|Jazz (G1)]] (pretender shell only)
* [[Landmine (G1)]]/[[Lander]] (pretender shell only)
* [[Metalhawk]] (pretender shell only)
* [[Michael Bay]] ''([[Hasbro]] jokingly produced a toy of him, included as an "[[easter egg]]" on the [[Transformers (film)|live-action movie]] DVD.)''
* The [[new lab assistant]]
* [[Pincher]] (pretender shell only)
* [[Sari Sumdac]]
* [[Simon Furman]] ''(In a [[Transformers (Titan Magazine)|Titan]] magazine [[Letters page|letters column]], [[Starscream (Movie)|Starscream]] joked that Furman was a [[Maximal]])''.
* [[Skyhammer (G1)]] (pretender shell only)
* [[Sky High (Pretender)]] (pretender shell only)
* [[Splashdown]] (pretender shell only)
* [[Starscream (G1)/toys|Starscream (G1)]] (pretender shell only)
* [[Stranglehold]] (pretender shell only)
* [[Vroom (G1)]] (pretender shell only)
* [[Waverider]]/[[Diver (Masterforce)]] (pretender shell only)
* [[Reflector (G1)#Alternity|Reflector (G1)]] (pretender shells only)

[[Category:Animals]]
[[Category:Earth]]
[[Category:Toys]]