There are at least three distinct subspecies: B. m. musculus of the North Atlantic and North Pacific, B. m. intermedia of the Southern Ocean and B. m. brevicauda ( also known as the pygmy blue whale ) found in the Indian Ocean and South Pacific Ocean.

B. m. indica, found in the Indian Ocean, may be another subspecies.

Authorities classify the species into three or four subspecies: B. m. musculus, the northern blue whale consisting of the North Atlantic and North Pacific populations, B. m. intermedia, the southern blue whale of the Southern Ocean, B. m. brevicauda, the pygmy blue whale found in the Indian Ocean and South Pacific, and the more problematic B. m. indica, the great Indian rorqual, which is also found in the Indian Ocean and, although described earlier, may be the same subspecies as B. m. brevicauda.

Crowhurst et al., for instance, found that the “ Ozark subspecies ” denomination is insufficient for describing genetic ( and therefore evolutionary ) divergence within the Cryptobranchus genus in the Ozark region.

The subspecies ( or species, depending on the source ) Cryptobranchus alleganiensis bishopi is confined to the Ozarks of northern Arkansas and southern Missouri while Cryptobranchus alleganiensis alleganiensis is found in the rest of the aforementioned states.

A genetic study by Eizirik and coworkers in 2001 confirmed the absence of a clear geographical subspecies structure, although they found that major geographical barriers, such as the Amazon River, limited the exchange of genes between the different populations.

The remains of these birds, which presumably were the direct ancestors of the living F. t. tinnunculus ( and perhaps other subspecies ), are found throughout the then-unglaciated parts of Europe, from the Late Pliocene ( ELMA Villanyian / ICS Piacenzian, MN16 ) about 3 million years ago to the Middle Pleistocene Saalian glaciation which ended about 130. 000 years ago, when they finally gave way to birds indistinguishable from those living today.

The penguin, which usually grows to an average of in height and in length ( though specific measurements vary by subspecies ), is found on the coastlines of southern Australia and New Zealand, with possible records from Chile.

The species is not considered endangered, except for the White-Flippered subspecies found only on Banks Peninsula and nearby Motunau Island in New Zealand.

The ring-tailed lemur is one of over 100 known species and subspecies of lemur found only in Madagascar.

Ostriches usually weigh from, Ostriches of the East African race ( S. c. massaicus ) averaged in males and in females, while the nominate subspecies was found to average in unsexed adults.

The quagga ( Equus quagga quagga ) is an extinct subspecies of the plains zebra, which was once found in great numbers in the Highveld of the Cape Province and the southern part of the Orange Free State in South Africa.

Because of the difficulty in classifying subspecies morphologically, many biologists have found the concept problematic, citing issues such as:

* Isolated populations within previously designated subspecies have been found to exist.

A subspecies called the Trinil tiger ( Panthera tigris trinilensis ) lived about 1. 2 million years ago and is known from fossils found at Trinil in Java.

Fossils found in Japan indicate that the local tigers were, like the surviving island subspecies, smaller than the mainland forms.

* The Malayan tiger ( Panthera tigris jacksoni ), exclusively found in the southern part of the Malay Peninsula, was not considered a subspecies in its own right until 2004.

Conversely, Per Christiansen found that using skull morphology allowed him to identify the subspecies krugeri, nubica, persica, and senegalensis, while there was overlap between bleyenberghi with senegalensis and krugeri.

**** Crocodylus niloticus, Nile crocodile or African crocodile ( the subspecies found in Madagascar is sometimes called the black crocodile )

The walleye is sometimes also called the yellow walleye to distinguish it from the blue walleye, which is an extinct subspecies formerly found in the southern Great Lakes.

* Sus scrofa affinis: This subspecies is smaller than S. s. cristatus and found in southern India and Sri Lanka.

Of the 25 endemics in the basin, only Brycinus dageti is found in the lake itself, and it is perhaps better treated as a dwarf subspecies of Brycinus nurse.

# P. onca palustris ( the largest subspecies, weighing more than 135 kg or 300 lb ): The Pantanal regions of Mato Grosso and Mato Grosso do Sul, Brazil, along the Paraguay River into Paraguay and northeastern Argentina.

The larger subspecies, the Greater Snow Goose ( C. c. atlanticus ), nests in northeastern Canada.

( Although only one island subspecies is legally listed as endangered in the United States, the species is declining continentwide and no longer occurs in most of the northeastern U. S .) A captive population was established at the Toronto Zoo and McGill University in 1997.

The nominate subspecies is found in the northeastern part of peninsular India south to Hyderabad.

Three subspecies have been tentatively proposed: M. t. tridactyla ( ranging from Venezuela and the Guianas to northern Argentina ), M. t. centralis ( native to Central America, northwestern Colombia and northern Ecuador ), and M. t. artata ( native to northeastern Columbia and northwestern Venezuela ).

The five widely recognized subspecies are albida Koelz, 1950 of western Asia in Iran and Pakistan ; indica ( Franklin, 1831 ) of northern India ; brama ( Temminck, 1821 ) of southern India which is darker than indica ; ultra Ripley, 1948 ( not always recognized ) of northeastern India is said to have the white spots on mantle much and " higher pitched calls "; and pulchra Hume, 1873 of Southeast Asia from Myanmar and Thailand extending into Cambodia and Vietnam.

* P. s. mesotypus: this subspecies has an orange vest ; its range is from eastern and northeastern Nigeria and Cameroon into southwest Chad.

The coastal taipan has two subspecies: the coastal taipan ( O. s. scutellatus ), found along the northeastern coast of Queensland, and the Papuan taipan ( O. s. canni ), found on the southern coast of Papua New Guinea.

There are two subspecies ; the nominate taxon, P. a. averano, in northeastern Brazil and P. a. carnobarba in Venezuela, Trinidad, extreme northeastern Colombia, western Guyana and far northern Brazil.

* E. c. cephalophus – the largest subspecies, brownish coat, found in southwestern China and northeastern Myanmar.

There, the subspecies of northeastern Amazonia ( S. g. axillaris ) ranges at least to the Pakaraima Mountains, where it is fairly common at 1, 200-1, 400 meters ASL, descending to about 850 meters ASL on occasion.

Its many subspecies are native to all but the harshest climes of continental Eurasia and its islands and Africa as well, from Ireland and India to Japan and north to Siberia.

* The Bengal tiger ( Panthera tigris tigris ), also called the Indian tiger, lives in India, Nepal, Bhutan and Bangladesh, and is the most common subspecies with populations estimated at less than 2, 500 adult individuals.

Striped hyenas occasionally feed on boars, though it has been suggested that only hyenas from the three larger subspecies present in Northwest Africa, the Middle East, and India can successfully kill them.

The Common Blackbird occurs up to 1000 metres ( 3300 ft ) in Europe, 2300 metres ( 7590 ft ) in North Africa, and at 900 – 1820 metres ( 3000 – 6000 ft ) in peninsular India and Sri Lanka, but the large Himalayan subspecies range much higher, with T. m. maximus breeding at 3200 – 4800 metres ( 10560 – 16000 ft ) and remaining above 2100 metres ( 6930 ft ) even in winter.

The nominate subspecies, N. p. percnopterus, has the largest range, occurring in southern Europe, northern Africa, the Middle East, Central Asia, and the north-west of India.

The subspecies name is derived from Gingee in southern India.

Its eight subspecies breed on mountains and coastal cliffs from the western coasts of Ireland and Britain east through southern Europe and North Africa to Central Asia, India and China.

Its two subspecies breed in high mountains from Spain east through southern Europe and North Africa to Central Asia, India and China, and it may nest at a higher altitude than any other bird.

The Pale Martin is the subspecies diluta of northern India and southeastern China is sometimes split as a separate species Riparia diluta.

In India, the subspecies govinda shows large seasonal fluctuations with the highest numbers seen from July to October, after the Monsoons, and it has been suggested that they make local movements in response to high rainfall.

Two further subspecies have been proposed, U. e. minor in South Africa and U. e. orientalis in north western India.

In southern India and Sri Lanka, subspecies caniceps, is marked by the rufous restricted to the rump, light crown and the pure grey on the back.

In southern India, the Maldives ( sometimes separated as maledivicus ) and Sri Lanka, the subspecies C. s. protegatus is darker grey.

As many as six subspecies may be present in the wintering ground in India or Southeast Asia and here they can be difficult to distinguish.

Nominate subspecies ( Kolkata, India )

The Bengal tiger ( Panthera tigris tigris ) or Indian tiger is a tiger subspecies native to South Asia, and is the national animal of India and Bangladesh.

The Bengal tiger is the most numerous tiger subspecies with populations estimated at 1, 706 – 1, 909 in India, 440 in Bangladesh, 124 – 229 in Nepal and 67 – 81 in Bhutan.

All three Green-winged Teal subspecies occur in the northern hemisphere during summer and in winter extend to northern South America, central Africa, southern India, Burma, and the Philippines.

The South Asian river dolphin ( Platanista gangetica ) is a freshwater or river dolphin found in India, Bangladesh, Nepal and Pakistan which is split into two subspecies, the Ganges river dolphin ( P. g. gangetica ) and Indus river dolphin ( P. g. minor ).

The Ganges subspecies ( P. g. gangetica ) can be found along the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river systems of Bangladesh and India, although its range formerly extended to Nepal.

The subspecies R. a. indicus has, in addition to its distinctive plumage, very different vocalisations to the other subspecies, and it was considered a separate species in early works, including the first edition ( 1898 ) of Fauna of British India, but later demoted to a subspecies by E. C. Stuart Baker in the second edition ( 1929 ).