A to Z
Animals that start with O
67 profiles
Amphibians
Oak Toad
Anaxyrus quercicus
Classification and source reference
Living
Fish
Oarfish
Regalecidae
Oarfishes are unusually long, ribbon-shaped marine fishes.
Living
Fish
Ocean Perch
Sebastes alutus
Classification and source reference
LivingAI illustration
Fish
Ocean Pout
Zoarces americanus
Classification and source reference
LivingAI illustration
Fish
Ocean Whitefish
Caulolatilus princeps
Classification and source reference
LivingAI illustrationFish
Oceanic Whitetip Shark
Carcharhinus longimanus
Classification and source reference
Living
Birds
Ocellated Turkey
Meleagris ocellata
Classification and source reference
LivingAI illustration
LCMammals
Ocelot
Leopardus pardalis
The ocelot is a medium-sized spotted cat of the Americas, from Texas to northern Argentina.
Living
Molluscs
Octopus
Octopoda
Octopuses are eight-armed cephalopods.
Living
Reptiles
Oenpelli python
Simalia oenpelliensis
Classification and source reference
LivingAI illustration
Fish
Oilfish
Ruvettus pretiosus
Classification and source reference
LivingAI illustration
Mammals
Okapi
Okapia johnstoni
Classification and source reference
LivingAI illustration
Mammals
Old English Sheepdog
Canis lupus familiaris
Classification and source reference
LivingAI illustrationInsects
Old House Borer
Hylotrupes bajulus
Classification and source reference
LivingInsects
Oleander Hawk Moth
Daphnis nerii
Classification and source reference
Living
Mammals
Olingo
Bassaricyon
Classification and source reference
LivingAI illustration
Mammals
Olive Baboon
Papio anubis
Classification and source reference
LivingAI illustration
Reptiles
Olive python
Liasis olivaceus
Classification and source reference
LivingAI illustration
Reptiles
Olive Sea Snake
Aipysurus laevis
Classification and source reference
LivingAI illustration
Amphibians
Olm
Proteus anguinus
The olm is a cave-dwelling salamander of southeastern Europe.
Living
Mammals
Olympic Marmot
Marmota olympus
Classification and source reference
LivingAI illustration
Birds
Onagadori Chicken
Gallus gallus domesticus
Classification and source reference
LivingAI illustration
Mammals
Onager
Equus hemionus onager
Classification and source reference
LivingAI illustration
Prehistoric invertebrates
Opabinia
Classification and source reference
ExtinctAI reconstruction
Fish
Opah
Lampridae
Classification and source reference
LivingAI illustration
Fish
Opaleye (Rudderfish)
Girella nigricans
Classification and source reference
LivingAI illustration
Fish
Oranda Goldfish
Carassius auratus
Classification and source reference
LivingAI illustrationArachnids
Orange Baboon Tarantula
Pterinochilus murinus
Classification and source reference
Living
Reptiles
Orange Dream Ball Python
Python regius
Classification and source reference
LivingAI illustration
Fish
Orange Roughy
Hoplostethus atlanticus
Classification and source reference
LivingAI illustrationArachnids
Orange Spider
Araneus marmoreus
Classification and source reference
Living
Birds
Orange Tanager (Orange-Headed Tanager)
Classification and source reference
LivingAI illustration
Birds
Orange-Crowned Warbler
Leiothlypis celata
Classification and source reference
LivingAI illustration
Mammals
Orangutan
Pongo
Orangutans are Asian great apes adapted to life in trees.
Living
Arachnids
Orb Weaver
Araneidae
Orb-weavers build circular prey-catching webs.
Living
DDMammals
Orca
Orcinus orca
The orca is the largest dolphin and the top predator of the sea.
Living
Birds
Orchard Oriole
Icterus spurius
Classification and source reference
LivingAI illustration
Fish
Orchid Dottyback
Pseudochromis fridmani
Classification and source reference
LivingAI illustrationAmphibians
Oregon Spotted Frog
Rana pretiosa
Classification and source reference
Living
Mammals
Ori-Pei
Canis lupus familiaris
Classification and source reference
LivingAI illustration
Mammals
Oribi
Ourebia ourebi
Classification and source reference
LivingAI illustrationInsects
Oriental Cockroach
Blatta orientalis
Classification and source reference
Living
Birds
Oriental Dwarf Kingfisher
Ceyx erithaca
Classification and source reference
LivingAI illustration
Reptiles
Orinoco Crocodile
Crocodylus intermedius
Classification and source reference
LivingAI illustration
Fish
Ornate Bichir
Polypterus ornatipinnis
Classification and source reference
LivingAI illustration
Reptiles
Ornate Black-Tailed Rattlesnake
Crotalus molossus ornatus
Classification and source reference
LivingAI illustration
Reptiles
Ornate Box Turtle
Terrapene ornata
Classification and source reference
LivingAI illustration
Reptiles
Ornithocheirus
Ornithocheirus
Classification and source reference
ExtinctAI reconstruction
Reptiles
Ornithomimus
Ornithomimus
Classification and source reference
ExtinctAI reconstruction
LCBirds
Ortolan bunting
Emberiza hortulana
The ortolan bunting is a small seed-eating songbird that breeds across Europe and West Asia and winters in Africa.
Living
Fish
Oscar Fish
Astronotus ocellatus
The oscar is a deep-bodied South American cichlid with a conspicuous eye-like mark near the tail.
Living
LCBirds
Osprey
Pandion haliaetus
The osprey is a large brown and white raptor that lives on fish and hunts by plunging feet first into water.
LivingCrustaceans
Ostracod
Ostracoda
Classification and source reference
Living
Birds
Ostrich
Struthio camelus
The common ostrich is a large, ground-dwelling African bird.
Living
Mammals
Otter
Lutrinae
Otters are water-associated members of the weasel family.
Living
Mammals
Otterhound
Canis lupus familiaris
Classification and source reference
LivingAI illustration
Birds
Ovenbird
Seiurus aurocapilla
Classification and source reference
LivingAI illustration
Reptiles
Oviraptor
Oviraptor
Classification and source reference
ExtinctAI reconstruction
Birds
Owl
Strigiformes
Classification and source reference
LivingAI illustrationInsects
Owl Butterfly
Caligo
Classification and source reference
Living
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