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Santa Catalina Island has a wider diversity of animals than most other Southern California Channel Islands, due to its large size and proximity to the mainland. It has the highest diversity of any Channel Island for reptiles and amphibians, with 4 amphibians and 8 reptiles. Santa Catalina Island also has the most introduced animals, in part due to its having the largest human population.

Animal species brought here by people since European contact are considered non-native. This is a selected list of both native and non-native animals found on Santa Catalina Island.

Faunal List (PDF)
Faunal List Status Definitions (PDF)
  California Myotis   Myotis californicus
  Fringed Myotis   Myotis thysanodes
  Hoary Bat   Lasiurus cinereus
  Long-eared Myotis   Myotis evotis
  Mexican Free-tailed Bat   Tadarida brasiliensis
  Pallid Bat   Antrozous pallidus
  Townsend's Big-eared Bat   Corynorhinus townsendii
  Yuma Myotis   Myotis yumanensis
  Acorn Woodpecker   Melanerpes formicivorus
  Allen's Hummingbird   Selasphorus sasin sedentarius
  American Coot   Fulica americana
  American Kestrel   Falco sparverius
  Anna's Hummingbird   Calypte anna
  Bald Eagle   Haliaeetus leucocephalus
  Barn Owl   Tyto alba
  Barn Swallow   Hirundo rustica
  Bewick's Wren   Thryomanes bewickii catalinae
  Black Oystercatcher   Haematopus
  Black Phoebe   Sayornis nigricans
  Brandt's Cormorant   Phalacrocorax bachmani
  Brown Pelican   Pelecanus occidentalis
  Brown-headed Cowbird   Molothrus ater
  Burrowing Owl   Athene cunicularia
  Catalina California Quail   Callipepla californica catalinensis
  Chipping Sparrow   Spizella psaltria
  Common Raven   Corvus corax
  European Starling   Sturnus vulgaris
  Great Blue Heron   Ardea herodias
  Hooded Oriole   Icterus cucullatus
  Horned Lark   Eremophila alpestris insularis
  House Finch   Carpodacus mexicanus clementis
  House Sparrow   Passer domesticus
  Hutton's Vireo   Vireo huttoni
  Island Loggerhead Shrike   Lanius ludovicianus anthonyi
  Killdeer   Charadrius acadicus
  Lesser Goldfinch   Carduelis psaltria
  Mourning Dove   Zenaida aurita
  Northern Flicker   Colaptes auratus
  Northern Mockingbird   Mimus polyglottos
  Northern Saw-whet Owl   Aegolius acadicus
  Orange-crowned Warbler   Vermivora celata sordida
  Osprey   Pandion haliaetus
  Pacific-slope Flycatcher   Empidonax difficilis
  Peregrine Falcon   Falcon peregrinus
  Phainopepla   Phainopepla nitans
  Red-tailed Hawk   Buteo jamaicensis
  Rock Dove   Columba livia
  Rock Wren   Salpintes obsoletus
  Spotted Dove   Streptopelia chinensis
  Spotted Towhee   Pipilo maculatus clementae
  Swainson's Thrush   Catharus ustulatus
  Western Flycatcher   Empidonax difficilis insulicola
  Western Gull   Larus occidentalis
  Western Meadowlark   Sturnella neglecta
  White-throated Swift   Aeronautes saxatalis
  Wild Turkey   Meleagris gallopavo
  Avalon Hairstreak   Strymon avalona
  Catalina Orange-tip Butterfly   Anthocharis cethura catalina
  Sara's Orange-tip Butterfly   Anthocharis sara gunderi
  Dog   Canis familiarus
  Santa Catalina Island Fox   Urocyon littoralis catalinae
  Catalina Shieldback Katydid   Neduba propsti
  Feral Cat   Felis catus
  Bullfrog   Rana catesbeiana
  Pacific Treefrog   Hyla regilla
  Desert Night Lizard   Xantusia vigilis
  Side-blotched Lizard   Uta stansburiana
  Southern Alligator Lizard   Elgaria multicarinatus
  Western Skink   Eumeces skiltonianus
  Black Rat   Rattus rattus
  Catalina California Ground Squirrel   Spermophilus beecheyi nesioticus
  House Mouse   Mus musculus
  Norway Rat   Rattus norvegicus
  Santa Catalina Island Deer Mouse   Peromyscus maniculatus catalinae
  Santa Catalina Island Harvest Mouse   Reithrodontomys megalotis catalinae
  Arboreal Salamander   Aneides lugubris
  Garden Slender Salamander   Batrachoseps major
Seals & Sea Lions
  California Sea Lion   Zalophus californianus
  Harbor Seal   Phoca vitulina
  Northern Elephant Seal   Mirounga angustirostris
  Santa Catalina Island Shrew   Sorex ornatus willetti
  Catalina Mountain Snail   Radiocentrum avalonense
  Island Birddrop Snail   Sterkia clementina
  Santa Catalina Lancetooth Snail   Haplotrema catalinense
  California Kingsnake   Lampropeltis getulus
  California Mountain Kingsnake   Lampropeltis zonata
  San Diego Gopher Snake   Pituophis melanoleucus
  Southern Pacific Rattlesnake   Crotalus viridis helleri
  Two-striped Garter Snake   Thamnophis hammondii
  Western Ringneck Snake   Diadophis punctatus
  Feral Pig   Sus scrofa
  American Bison   Bison bison
  Black Buck Antelope   Antelope cervicarpa
  Horse   Equus caballus
  Mule Deer   Odocoileus hemionus
  Pig   Sus scrofa

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