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Global Mammals
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Global Mammals
Species
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17
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17
Odocoileus virginianus clavium
(Key deer)
The Key deer is the smallest subspecies of the white-tailed deer in North America, and is sometimes called ‘toy deer' due its small...
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11 Images
0 Videos
Okapia johnstoni
(Okapi)
Perhaps the most extraordinary fact about the okapi is that it was not known to science until 1901. Its taxonomic name, Okapia...
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11 Images
10 Videos
Oncifelis colocolo
(Pampas cat)
This little known South American cat can be found in a greater variety of habitats than any other cat on the continent. It looks...
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10 Images
0 Videos
Oncifelis guigna
(Kodkod)
This secretive cat is the size of a tiny house cat, earning itself the distinction of being one of the smallest cats in the...
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1 Image
0 Videos
Onychogalea fraenata
(Bridled nailtail wallaby)
The bridled nailtail wallaby gets its name from the white bridle line running from the centre of the neck down behind the forearm...
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12 Images
5 Videos
Orcaella brevirostris
(Irrawaddy dolphin)
A particularly distinctive dolphin, the Irrawaddy has a rounded head with no beak and a flexible neck, causing visible creases...
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1 Image
4 Videos
Oreailurus jacobita
(Andean cat)
The Andean cat is considered to be one of the most endangered wild cats in the world and perhaps the rarest South American...
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1 Image
1 Video
Oreotragus oreotragus
(Klipspringer)
This fascinating small antelope has a number of distinct features that make it well adapted to its rugged, rocky habitat....
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19 Images
2 Videos
Orycteropus afer
(Aardvark)
Information on the aardvark is currently being researched and written and will appear here...
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20 Images
0 Videos
Oryx dammah
(Scimitar-horned oryx)
The scimitar-horned oryx, so named for its magnificent curved horns, is now thought to be Extinct in the Wild, hunted to the brink...
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5 Images
6 Videos
Oryx gazella
(Gemsbok)
The most distinctive features of this heavily built antelope are its long, rapier-shaped horns and striking black and white facial...
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59 Images
8 Videos
Oryx leucoryx
(Arabian oryx)
At one time extinct in the wild, this desert antelope can once again be seen wandering the dry Arabian Peninsula. The Arabian oryx...
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21 Images
9 Videos
Otocolobus manul
(Pallas's cat)
Pallas's cat is about the size of a domestic cat but looks much larger due to its stocky build and long, dense coat, which helps...
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12 Images
1 Video
Otomops wroughtoni
(Wroughton's free-tailed bat)
Wroughton's free-tailed bat was considered to be one of the 15 most endangered bat species; however, more recent discoveries...
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2 Images
0 Videos
Ourebia ourebi
(Oribi)
The smallest true grazer amongst the antelope, the oribi is a medium-sized ungulate with slender legs, a long neck, and small...
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14 Images
2 Videos
Ovis ammon
(Argali)
The argali is the largest of the wild sheep, and the males have impressive horns that are highly prized by hunters. Currently...
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2 Images
9 Videos
Ovis orientalis
(Mouflon)
The males of this exceedingly wary wild sheep have large sickle-shaped horns, which are prized by many a trophy hunter. For most...
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49 Images
2 Videos
Species
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In the news
2008 IUCN Red List of Threatened Species™
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What's new in ARKive
Updated species information for the Speke's gazelle.
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Red List Revisions
Introduced rodent predators threaten Atlantic petrel chicks on their island breeding grounds.
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Red List Revisions
A flagship for conservation, the humpback whale's status has improved over recent years.
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Red List Revisions
Further research on the irrawaddy dolphin has resulted in its Vulnerable status.
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Red List Revisions
Over-hunting and forest clearance for logging and agriculture continue to threaten the crested black macaque.
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Red List Revisions
Despite continuing threats against the Diana guenon its conservation status has improved.
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