Animalia > Chordata > Reptilia > Crocodylia > Alligatoridae > Alligator > Alligator mississippiensis

Alligator mississippiensis (Alligator, Gator, American alligator, Florida alligator, Mississippi alligator, Louisiana alligator.)

Synonyms: Alligator lucius; Crocodilus cuvieri; Crocodilus lucius; Crocodilus mississipiensis

Wikipedia Abstract

The American alligator (Alligator mississippiensis), sometimes referred to colloquially as a gator or common alligator, is a large crocodilian reptile endemic to the southeastern United States. It is one of two living species in the genus Alligator within the family Alligatoridae; it is larger than the other extant alligator species, the Chinese alligator. Adult male American alligators measure up to 3.4 to 4.6 m (11 to 15 ft) in length, and can weigh up to 453 kg (999 lb).
View Wikipedia Record: Alligator mississippiensis


Adult Weight [2]  330.70 lbs (150.00 kg)
Female Maturity [2]  12 years
Male Maturity [2]  12 years
Diet [1]  Carnivore
Gestation [3]  65 days
Litter Size [3]  42
Maximum Longevity [2]  73 years
Water Biome [1]  Lakes and Ponds, Rivers and Streams, Coastal, Brackish Water


Name Countries Ecozone Biome Species Report Climate Land
Central U.S. hardwood forests United States Nearctic Temperate Broadleaf and Mixed Forests
East Central Texas forests United States Nearctic Temperate Broadleaf and Mixed Forests
Everglades United States Neotropic Flooded Grasslands and Savannas
Florida sand pine scrub United States Nearctic Temperate Coniferous Forests
Mississippi lowland forests United States Nearctic Temperate Broadleaf and Mixed Forests
Ozark Mountain forests United States Nearctic Temperate Broadleaf and Mixed Forests
Piney Woods forests United States Nearctic Temperate Coniferous Forests
South Florida rocklands United States Neotropic Tropical and Subtropical Moist Broadleaf Forests
Southeastern conifer forests United States Nearctic Temperate Coniferous Forests
Southeastern mixed forests United States Nearctic Temperate Broadleaf and Mixed Forests
Tamaulipan mezquital Mexico, United States Nearctic Deserts and Xeric Shrublands
Texas blackland prairies United States Nearctic Temperate Grasslands, Savannas, and Shrublands
Western Gulf Coastal grasslands Mexico, United States Nearctic Tropical and Subtropical Grasslands, Savannas, and Shrublands  

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Big Cypress National Preserve V 732120 Florida, United States
Big Thicket Biosphere Reserve National Park II 616880 Texas, United States
Canaveral National Seashore II 9090 Florida, United States
Cape Romain National Wildlife Refuge IV 8964 South Carolina, United States
Carolinian-South Atlantic Biosphere Reserve 310228 North Carolina, South Carolina, Georgia, United States      
Cumberland Island National Seashore II 20629 Georgia, United States
Everglades and Dry Tortugas Biosphere Reserve   Florida, United States  
Felsenthal National Wildlife Refuge VI 66133 Arkansas, United States
Florida Keys National Marine Sanctuary IV 2387149 Florida, United States
Fort Caroline National Memorial III 137 Florida, United States
Fort Pulaski National Monument V 4213 Georgia, United States
Gulf Island National Seashore II 67487 Florida, Mississippi, United States
Hot Springs National Park II 5740 Arkansas, United States
Jean Lafitte National Hist. Park & Preserve National Historical Park II 17686 Louisiana, United States
Little River National Wildlife Refuge   Oklahoma, United States
Little St. Simons Island   Georgia, United States
Okefenokee National Wildlife Refuge IV 38256 Florida, United States
Santee Coastal Reserve and Washo Reserve State Habitat Area IV 20850 South Carolina, United States  
South Atlantic Coastal Plain Biosphere Reserve 20317 South Carolina, United States  
Wheeler National Wildlife Refuge IV 26618 Alabama, United States

Emblem of


Prey / Diet

Agkistrodon piscivorus (conanti)[4]
Aix sponsa (Wood Duck)[4]
Alligator mississippiensis (Alligator, Gator, American alligator, Florida alligator, Mississippi alligator, Louisiana alligator.)[4]
Ameiurus natalis (Yellow bullhead)[4]
Ameiurus nebulosus (Brown bullhead)[4]
Amia calva (Bowfin)[4]
Amphiuma means (Two-toed Amphiuma)[4]
Anas fulvigula (Mottled Duck)[4]
Anhinga anhinga (Anhinga)[4]
Apalone ferox (Florida Softshell Turtle)[4]
Ardea alba (Great Egret)[4]
Dorosoma cepedianum (American gizzard shad)[4]
Egretta thula (Snowy Egret)[4]
Eudocimus albus (White Ibis)[4]
Farancia abacura (abacura)[4]
Gopherus polyphemus ((Florida) Gopher Tortoise)[4]
Lepomis gulosus (Warmouth bass)[4]
Lepomis macrochirus (Bluegill)[4]
Lepomis microlophus (Redear sunfish)[4]
Lepomis punctatus (Spotted sunfish)[4]
Lontra canadensis (northern river otter)[4]
Micropterus salmoides (Northern largemouth bass)[4]
Mimus polyglottos (Northern Mockingbird)[4]
Mycteria americana (Wood Stork)[4]
Neofiber alleni (round-tailed muskrat)[4]
Neotoma floridana (eastern woodrat)[4]
Nerodia taxispilota (Brown Water Snake)[4]
Notemigonus crysoleucas (Golden shiner minnow)[4]
Ondatra zibethicus (muskrat)[4]
Peromyscus gossypinus (cotton mouse)[4]
Phalacrocorax auritus (Double-crested Cormorant)[4]
Podilymbus podiceps (Pied-billed Grebe)[4]
Pomacea paludosa (Florida applesnail)[4]
Pomoxis nigromaculatus (Strawberry bass)[4]
Procyon lotor (Raccoon)[4]
Pseudemys nelsoni (Florida Redbelly Turtle)[4]
Romalea microptera (Florida lubber)[4]
Sigmodon hispidus (hispid cotton rat)[4]
Siren lacertina (Greater siren)[4]
Sternotherus odoratus (Common Musk Turtle, Stinkpot Turtle)[4]
Strongylura marina (Atlantic needlefish)[4]
Sylvilagus aquaticus (Swamp Rabbit)[5]


Alligator mississippiensis (Alligator, Gator, American alligator, Florida alligator, Mississippi alligator, Louisiana alligator.)[4]
Homo sapiens (man)[4]
Lontra canadensis (northern river otter)[4]
Micropterus salmoides (Northern largemouth bass)[4]
Procyon lotor (Raccoon)[4]


Parasitized by 
Acanthochasmus diploporus <Unverified Name>[6]
Acanthostomum coronarium <Unverified Name>[6]
Acanthostomum loossi <Unverified Name>[6]
Acanthostomum pavidum <Unverified Name>[6]
Archaeodiplostomum acetabulatum[6]
Brevimulticaecum baylisi <Unverified Name>[6]
Brevimulticaecum tenuicolle <Unverified Name>[6]
Crocodilicola pseudostoma <Unverified Name>[6]
Dracovermis occidentalis[6]
Dujardinascaris waltoni <Unverified Name>[6]
Goezia lacerticola <Unverified Name>[6]
Polycotyle ornata[6]
Proctocaecum coronarium[6]
Proctocaecum diploporus <Unverified Name>[6]
Proctocaecum pavidum <Unverified Name>[6]
Pseudocrocodilicola georgiana <Unverified Name>[6]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Aalborg Zoo
Abilene Zoological Gardens
Adelaide Zoo
Alabama Gulf Coast Zoo
Albuquerque Biological Park
Alexandria Zoological Park
America's Teaching Zoo
Attica Zoological Park S.A.
Auckland Zoological Park
Audubon Zoo
Australia Zoo
Bergen County Zoological Park
Bermuda Aquarium Museum and Zoo
Birmingham Zoo
Blank Park Zoo of Des Moines
Bosphorus Zoo (Bogaziçi Hayvanat
Bramble Park Zoo
BREC's Baton Rouge Zoo
Brevard Zoo
Bronx Children's Zoo
Bronx Zoo/Wildlife Conservat'n Society
Brookgreen Gardens
Budapest Zool.& Botanical Garden
Buffalo Zoological Gardens
Caldwell Zoo
Cameron Park Zoo
Cape May County Park Zoo
Central Florida Zoological Park
CERZA Centre d'Etude Rech Zool Augeron
Chahinkapa Zoo
Charles Paddock Zoo
Chehaw Wild Animal Park
Chicago Zoological Park
Children's Zoo at Celebration Square
Cincinnati Zoo & Botanical Garden
Clyde Peeling's Reptiland
Columbus Zoo and Aquarium
Connecticut's Beardsley Zoo
Dakota Zoo
Dallas Aquarium at Fair Park
Dallas Zoo
Denver Zoological Gardens
Dickerson Park Zoo
Dierenpark de Oliemeulen (Zoo Tilburg)
Disney's Animal Kingdom
El Paso Zoo
Ellen Trout Zoo
Erie Zoological Gardens
Florida Aquarium
Fort Wayne Children's Zoo
Fort Worth Zoological Park
Fresno Chaffee Zoo
Giza Zoological Garden
Gladys Porter Zoo
Granby Zoo / Zoo de Granby
Great Plains Zoo
Greenville Zoo
Hai Park Kiriat Motzkin
Hattiesburg Zoo
Henry Vilas Zoo
Henson Robinson Zoo
Homosassa Springs Wildlife State Park
Honolulu Zoo
Houston Zoo, Inc.
Indian River Reptile Zoo
Jackson Zoological Park
Jacksonville Zoo and Gardens
Jardim Zoologico / Lisbon Zoo
Jardin Zoologico de Cdad.Buenos Aires
Jesperhus Blomsterpark
John Ball Zoological Garden
Jungleland Zoo
Kharkiv Zoo
Kristiansand Dyrepark ASA
Lake Superior Zoological Gardens
Lehigh Valley Zoo
Lion Country Safari Inc - Florida
Little Rock Zoological Gardens
Living Seas
Los Angeles Zoo & Botanical Gardens
Louisiana Purchase Gardens & Zoo
Louisville Zoological Garden
Melbourne Zoo
Memphis Zoological Garden & Aquarium
Mesker Park Zoo
Miejski Ogrod Zoologiczny, Plock
Mill Mountain Zoo
Mogo Zoo P/L
Montgomery Zoo
Moscow Zoological Park
Museum of Science - Live Animal Center
Nakhon Ratchasima Zool. Park
Nashville Zoo at Grassmere
Nat'l Mississippi River Museum & Aquar
Nat'l Zoological Gardens of S. Africa
National Zoo & Aquarium
Natural Science Center of Greensboro
Niabi Zoo
Nikolaev Zoo of Nikolaev-City Council
Noah's Ark Zoo Farm
Nogeyama Zoological Gardens Yokohama
North Carolina Zoological Park
Oakland Zoo
Oatland Island Wildlife Center
Oklahoma City Zoological Park
Omaha's Henry Doorly Zoo
Osaka Municipal Tennoji Zool. Gdns.
Palm Beach Zoo at Dreher Park
Parque De Animales Silvestres Temaikèn
Patronato del Parque Zoologico de Leon
Peoria Zoo in Glen Oak Park
Pittsburgh Zoo & PPG Aquarium
Potawatomi Zoo
Queens Zoo
Racine Zoological Gardens
Randers Regnskov
Riverbanks Zoo and Garden
Riverside Zoo
Roosevelt Park Zoo
Saint Louis Zoological Park
Salisbury Zoological Park
San Antonio Zoological Gardens & Aquar
San Diego Wild Animal Park
San Diego Zoo
San Francisco Zoological Gardens
Santa Barbara Zoological Gardens
Santa Fe CollegeTeaching Zoo
Scovill Zoo
Silver Springs Park
Six Flags Discovery Kingdom
Smithsonian National Zoological Park
Societa Zoologica Di Pistoia S.R.L
South Carolina Aquarium
St. Augustine Alligator Farm
Steinhart Aquarium (CA Acad of Science
Symbio Wildlife Gardens
Tallahassee Museum of History and
Tampa's Lowry Park Zoo
Taronga Zoo
Tautphaus Park Zoo
Tennessee Aquarium
Texas Zoo
The Naples Zoo
The Philadelphia Zoo
Thrigby Hall Wildlife Gardens
Toronto Zoo
Tulsa Zoo & Living Museum
Turtle Back Zoo
Tygerberg Zoopark
Usti nad Labem Zoo
Utica Zoo
Virginia Aquarium&Marine Science Ctr
Virginia Living Museum
Washington Park Zoological Gardens
Welsh Mountain Zoo
West Midland Safari & Leisure Park Ltd
Wildlife Safari Inc
Wildlife World Zoo
Zoo Atlanta
Zoo of Acadiana
Zoo Parc de Beauval
ZooAmerica (No. American Wildlife Pk.)
Zoobotanico de Jerez
Zoological Center Tel Aviv - Ramat Gan
Zoologicka Garden & Chateau Zlin-Lesna
Zoologischer Garten Halle GmbH
Zoologischer Garten Leipzig
ZOOMARINE - Mundo Aquatico S.A.
ZooWorld Zoological Botanical Conserv.

Range Map

SE USA (Alabama, Arkansas, North Carolina, South Carolina, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Texas), Mexico Terra typica: "les bords du Mississipi," U.S.A.;


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Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hunt, RH, Ogden, JJ (1991). Selected aspects of the nesting ecology of American alligators in the Okefenokee swamp. J. Herpetol. 25(4): 448-453
4Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
5Sylvilagus aquaticus, Joseph A. Chapman and George A. Feldhamer, Mammalian Species No. 151, pp. 1-4 (1981)
6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
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