There are 31 mammals that start with the letter O, from Ocelot to Owston’s Palm Civet. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the mammals belongs to
Habitat: The places or type of weather the mammals lives in
Scientific name: The designation that scientists use to catalog the species
Name: Ocelot
Order: Carnivora
Habitat: Tropical and subtropical forests in the Americas
Scientific name: Leopardus pardalis
Name: Ochotona
Order: Lagomorpha
Habitat: Rocky mountainous regions in North America
Scientific name: Ochotona princeps
Name: Octodon
Order: Rodentia
Habitat: central Chile
Scientific name: Octodon degus
Name: Octodon degu
Order: Rodentia
Habitat: South America
Scientific name: Octodon degus
Name: Odin's Shrew
Order: Eulipotyphla
Habitat: Taiga and tundra regions of Scandinavia and Russia
Scientific name: Sorex isodon
Name: Ogilby's Duiker
Order: Artiodactyla
Habitat: tropical African forests
Scientific name: Cephalophus ogilbyi
Name: Okapi
Order: Artiodactyla
Habitat: Rainforests of Democratic Republic of the Congo
Scientific name: Okapia johnstoni
Name: Olimpornis
Order: Rodentia
Habitat: South America
Scientific name: Olimpornis grisescens
Name: Olingo
Order: Carnivora
Habitat: Cloud forests in Central and South America
Scientific name: Bassaricyon gabbii
Name: Olive Baboon
Order: Primates
Habitat: Savanna and grassland habitats in Africa
Scientific name: Papio anubis
Name: Olive Colobus
Order: Primates
Habitat: Tropical forests of West Africa
Scientific name: Procolobus verus
Name: Olive Mongoose
Order: Carnivora
Habitat: Forests and scrublands of Southeast Asia
Scientific name: Herpestes olivaceus
Name: Omura's Whale
Order: Cetacea
Habitat: tropical and subtropical waters of the Indian and western Pacific Oceans
Scientific name: Balaenoptera omurai
Name: Onager
Order: Perissodactyla
Habitat: Arid regions of Central Asia
Scientific name: Equus hemionus
Name: Ondatra
Order: Rodentia
Habitat: North America
Scientific name: Ondatra zibethicus
Name: Ontong Java Flying Fox
Order: Chiroptera
Habitat: Native to the Ontong Java Atoll in the Solomon Islands
Scientific name: Pteropus howensis
Name: Onychogale
Order: Diprotodontia
Habitat: Australia
Scientific name: Onychogale spp.
Name: Onychogalea
Order: Diprotodontia
Habitat: Australia
Scientific name: Onychogalea spp.
Name: Onychomys
Order: Rodentia
Habitat: Deserts and grasslands of North America
Scientific name: Onychomys leucogaster
Name: Orang-utan
Order: Primates
Habitat: Rainforests of Sumatra and Borneo
Scientific name: Pongo sp.
Name: Orca
Order: Cetacea
Habitat: Worldwide in oceans and seas
Scientific name: Orcinus orca
Name: Ordos Pika
Order: Lagomorpha
Habitat: Deserts and grasslands of northern China
Scientific name: Ochotona ordosica
Name: Oryx
Order: Artiodactyla
Habitat: Deserts and semi-deserts in North Africa and the Middle East
Scientific name: Oryx leucoryx
Name: Oryx Antelope
Order: Artiodactyla
Habitat: Middle East, North Africa, and eastern Africa
Scientific name: Oryx spp.
Name: Oryzomys
Order: Rodentia
Habitat: North and South America
Scientific name: Oryzomys spp.
Name: Osmose's Mouse
Order: Rodentia
Habitat: Endemic to Mount Nimba in West Africa
Scientific name: Mus ossirinensis
Name: Otomys
Order: Rodentia
Habitat: Africa
Scientific name: Otomys spp.
Name: Otter
Order: Carnivora
Habitat: Freshwater and coastal habitats in Eurasia
Scientific name: Lutra lutra
Name: Otter Shrew
Order: Soricomorpha
Habitat: Forests and waterways of Central Africa
Scientific name: Potamogale velox
Name: Owston's Civet
Order: Carnivora
Habitat: Tropical forests of Vietnam and southern China
Scientific name: Chrotogale owstoni
Name: Owston's Palm Civet
Order: Carnivora
Habitat: Tropical forests of Vietnam and southern China
Scientific name: Chrotogale owstoni
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Ocelot | Carnivora | Tropical and subtropical forests in the Americas | Leopardus pardalis |
| Ochotona | Lagomorpha | Rocky mountainous regions in North America | Ochotona princeps |
| Octodon | Rodentia | central Chile | Octodon degus |
| Octodon degu | Rodentia | South America | Octodon degus |
| Odin's Shrew | Eulipotyphla | Taiga and tundra regions of Scandinavia and Russia | Sorex isodon |
| Ogilby's Duiker | Artiodactyla | tropical African forests | Cephalophus ogilbyi |
| Okapi | Artiodactyla | Rainforests of Democratic Republic of the Congo | Okapia johnstoni |
| Olimpornis | Rodentia | South America | Olimpornis grisescens |
| Olingo | Carnivora | Cloud forests in Central and South America | Bassaricyon gabbii |
| Olive Baboon | Primates | Savanna and grassland habitats in Africa | Papio anubis |
| Olive Colobus | Primates | Tropical forests of West Africa | Procolobus verus |
| Olive Mongoose | Carnivora | Forests and scrublands of Southeast Asia | Herpestes olivaceus |
| Omura's Whale | Cetacea | tropical and subtropical waters of the Indian and western Pacific Oceans | Balaenoptera omurai |
| Onager | Perissodactyla | Arid regions of Central Asia | Equus hemionus |
| Ondatra | Rodentia | North America | Ondatra zibethicus |
| Ontong Java Flying Fox | Chiroptera | Native to the Ontong Java Atoll in the Solomon Islands | Pteropus howensis |
| Onychogale | Diprotodontia | Australia | Onychogale spp. |
| Onychogalea | Diprotodontia | Australia | Onychogalea spp. |
| Onychomys | Rodentia | Deserts and grasslands of North America | Onychomys leucogaster |
| Orang-utan | Primates | Rainforests of Sumatra and Borneo | Pongo sp. |
| Orca | Cetacea | Worldwide in oceans and seas | Orcinus orca |
| Ordos Pika | Lagomorpha | Deserts and grasslands of northern China | Ochotona ordosica |
| Oryx | Artiodactyla | Deserts and semi-deserts in North Africa and the Middle East | Oryx leucoryx |
| Oryx Antelope | Artiodactyla | Middle East, North Africa, and eastern Africa | Oryx spp. |
| Oryzomys | Rodentia | North and South America | Oryzomys spp. |
| Osmose's Mouse | Rodentia | Endemic to Mount Nimba in West Africa | Mus ossirinensis |
| Otomys | Rodentia | Africa | Otomys spp. |
| Otter | Carnivora | Freshwater and coastal habitats in Eurasia | Lutra lutra |
| Otter Shrew | Soricomorpha | Forests and waterways of Central Africa | Potamogale velox |
| Owston's Civet | Carnivora | Tropical forests of Vietnam and southern China | Chrotogale owstoni |
| Owston's Palm Civet | Carnivora | Tropical forests of Vietnam and southern China | Chrotogale owstoni |