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Sunday, December 19, 2010

Strangest Animals! [Episode_2]

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Strangest Animals! [Episode_2]

Animals have several characteristics that set them apart from other living things. Animals are eukaryotic and mostly multicellular, which separates them from bacteria and most protists. They are heterotrophic, generally digesting food in an internal chamber, which separates them from plants and algae. They are also distinguished from plants, algae, and fungi by lacking rigid cell walls. All animals are motile, if only at certain life stages. In most animals, embryos pass through a blastula stage, which is a characteristic exclusive to animals.


1. Blobfish
The Blobfish (Psychrolutes marcidus) is a fish that inhabits the deep waters off the coasts of Australia and Tasmania. Due to the inaccessibility of its habitat, it is rarely seen by humans.   

Blobfish are found at depths where the pressure is several dozens of times higher than at sea level, which would likely make gas bladders inefficient. To remain buoyant, the flesh of the blobfish is primarily a gelatinous mass with a density slightly less than water; this allows the fish to float above the sea floor without expending energy on swimming. The relative lack of muscle is not a disadvantage as it primarily swallows edible matter that floats by in front it.


2. Sloth
Sloths are medium-sized mammals that live in Central and South America belonging to the families Megalonychidae and Bradypodidae, part of the order Pilosa. Most scientists call these two families the Folivora suborder, while some call it Phyllophaga.
Sloths are omnivores. They may eat insects, small lizards and carrion, but their diet consists mostly of buds, tender shoots, and leaves. Sloths have made extraordinary adaptations to an arboreal browsing lifestyle. Leaves, their main food source, provide very little energy or nutrition and do not digest easily: sloths have very large, specialized, slow-acting stomachs with multiple compartments in which symbiotic bacteria break down, the tough leaves.

As much as two-thirds of a well-fed sloth's body-weight consists of the contents of its stomach, and the digestive process can take as long as a month or more to complete. Even so, leaves provide little energy, and sloths deal with this by a range of economy measures: they have very low metabolic rates (less than half of that expected for a creature of their size), and maintain low body temperatures when active (30 to 34 degrees Celsius or 86 to 93 degrees Fahrenheit), and still lower temperatures when resting. Sloths mainly live in Cecropia trees.


3. Cantor's giant soft-shelled turtle
(Image Source: Sharenator)
The Cantor’s giant soft-shelled turtle ( Pelochelys cantorii) is found primarily in inland, slow-moving fresh water rivers and streams.  

Cantor's giant soft-shelled turtles can grow up to 6 feet (about 2 meters) in length and weigh more than 100 pounds (about 50 kilograms).




4. Aye - Aye
The Aye-aye (Daubentonia madagascariensis) is a strepsirrhine native to Madagascar that combines rodent-like teeth with a long, thin middle finger to fill the same ecological niche as a woodpecker. It is the world's largest nocturnal primate, and is characterized by its unique method of finding food; it taps on trees to find grubs, then gnaws holes in the wood and inserts its elongated middle finger to pull the grubs out.

Daubentonia is the only genus in the family Daubentoniidae and infraorder Chiromyiformes. The Aye-aye is the only extant member of the genus (although it is currently an endangered species); a second species (Daubentonia robusta) was exterminated over the last few centuries.


5. Saiga Antelope
(Image Source: Sharenator)
The Saiga Antelope is classified as critically endangered by the IUCN.

There is an estimated total number of 50,000 Saigas today, which live in Kalmykia, three areas of Kazakhstan and in two isolated areas of Mongolia.


6. Frill-necked Lizard
The Frill-necked Lizard or Frilled Lizard also known as the Frilled Dragon, (Chlamydosaurus kingii) is so called because of the large ruff of skin which usually lays folded back against its head and neck. The neck frill is supported by long spines of cartilage, and when the lizard is frightened, it gapes its mouth showing a bright pink or yellow lining, and the frill flares out, displaying bright orange and red scales. The frill may also aid in thermoregulation.

They may grow up to one meter in total length. They often walk quadrupedally when on the ground. When frightened they begin to run on all-fours and then accelerate onto the hind-legs. In Australia, the frill-necked lizard is also known as the "bicycle lizard" because of this behaviour. Males are significantly larger than females both as juveniles and when mature. The frill of the Australian frilled dragon is used to frighten off potential predators — as well as hissing and lunging. If this fails to ward off the threat, the lizard flees bipedally to a nearby tree where it climbs to the top and relies on camouflage to keep it hidden.


7. Platypus
The Platypus (Ornithorhynchus anatinus) is a semi-aquatic mammal endemic to eastern Australia, including Tasmania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth to live young. It is the sole living representative of its family (Ornithorhynchidae) and genus (Ornithorhynchus), though a number of related species have been found in the fossil record.  

The bizarre appearance of this egg-laying, duck-billed mammal baffled naturalists when it was first discovered, with some considering it an elaborate fraud. It is one of the few venomous mammals; the male Platypus has a spur on the hind foot which delivers a poison capable of causing severe pain to humans. The unique features of the Platypus make it an important subject in the study of evolutionary biology and a recognizable and iconic symbol of Australia; it has appeared as a mascot at national events and is featured on the reverse of the Australian 20 cent coin.
Until the early 20th century it was hunted for its fur, but it is now protected throughout its range. Although captive breeding programs have had only limited success and the Platypus is vulnerable to the effects of pollution, it is not under any immediate threat.


8. Angora Rabbit
The Angora rabbit is a variety of domestic rabbit bred for its long, soft hair. The Angora is one of the oldest types of domestic rabbit, originating in Ankara, Turkey, along with the Angora cat and Angora goat. The rabbits were popular pets with French royalty in the mid 1700s, and spread to other parts of Europe by the end of the century.  



They first appeared in the United States in the early 1900s. They are bred largely for their long wool, which may be removed by shearing or plucking (gently pulling loose wool). There are many individual breeds of Angora rabbits, four of which are ARBA recognized. Such breeds include, French, German, Giant, English, Satin, Chinese, Swiss, and Finnish to name a few.

9. Yeti Crab or Kiwa Hirsuta
Yeti Crab or Kiwa hirsuta is a crustacean discovered in 2005 in the South Pacific Ocean. This decapods, which is approximately 15 cm (6 inches) long, is notable for the quantity of silky blond setae (resembling fur) covering its pereiopods (thoracic legs, including claws). Its discoverers dubbed it the "yeti lobster" or "yeti crab". K. hirsuta was discovered in March 2005 by a group organized by Robert Vrijenhoek of the Monterey Bay Aquarium Research Institute in Monterey, California, using the submarine DSV Alvin, operating from RV Atlantis.



The discovery was announced on the 7th of March, 2006. It was found 1,500 km (900 miles) south of Easter Island in the South Pacific, at a depth of 2,200 m (7,200 feet), living on hydrothermal vents along the Pacific-Antarctic Ridge. Based on both morphology and molecular data, the species was deemed to form a new genus and family (Kiwaidae). The animal has strongly reduced eyes that lack pigment, and is thought to be blind.
The 'hairy' pincers contain filamentous bacteria, which the creature may use to detoxify poisonous minerals from the water emitted by the hydrothermal vents where it lives. Alternatively, it may feed on the bacteria, although it is thought to be a general carnivore. Its diet also consists of green algae and small shrimp.


10. Emperor Tamarin
The Emperor Tamarin (Saguinus imperator) is a tamarin allegedly named for its similarity with the German emperor Wilhelm II. The name was first intended as a joke, but has become the official scientific name.
This tamarin lives in the southwest Amazon Basin, in east Peru, north Bolivia and in the west Brazilian states of Acre and Amazonas.
 



The fur of the Emperor Tamarin is predominantly grey colored, with yellowish speckles on its chest. The hands and feet are black and the tail is brown. Outstanding is its long, white mustache, which extends to both sides beyond the shoulders. The animal reaches a length of 24 to 26 cm, plus a 35 cm long tail. It weighs approximately 300 to 400 g. This primate inhabits tropical rain forests, living deep in the forest and also in open tree-covered areas. It is a diurnal animal, spending the majority of its days in the trees with quick, safe movements and broad jumps among the limbs.



11. Dumbo Octopus
(Image Source: aakova)
The Dumbo Octopus gets its name from the two fins which look like and are situated like ears. ‘Dumbo’ will swim using these larges fins and with the help of its arms it is a formidable swimmer and this shows when ’Dumbo’ needs to get somewhere fast, like away from a predator!



Their reproduction happens by laying eggs and apparently the dumbo octopus hasn’t a special breeding season and it feeds itself with little sea creatures like shrimps and worms.


12. Tapir
Tapirs are large browsing mammals, roughly pig-like in shape, with short, prehensile snouts. They inhabit jungle and forest regions of South America, Central America, and Southeast Asia.



All four species of tapir are classified as endangered or vulnerable. Their closest relatives are the other odd-toed ungulates, horses and rhinoceroses.


13. Leafy sea dragon
Named after the dragons of Chinese mythology, Leafy sea dragons (Phycodurus eques) resemble a piece of drifting seaweed as they float in the seaweed-filled water. The Leafy sea dragon, with green, orange and gold hues along its body, is covered with leaf-like appendages, making it remarkably camouflaged. Only the fluttering of tiny fins or the moving of an independently swiveling eye reveals its presence.



Like the seahorse, the male sea dragon carries as many as 150-200 eggs. After being deposited by the female, the eggs are carried in the honeycomb-shaped area (known as the brood patch) under the male's tail for approximately eight weeks. Sea dragons have no teeth or stomach and feed exclusively on mysidopsis shrimp. Known as "Australian seahorses" in Australia, they are found in calm, cold water that is approximately 50-54° F (10-12° C). Leafy sea dragons have been protected by the South Australian government since 1982.


14. White-faced Saki Monkey
The White-faced Saki monkey (Pithecia pithecia), also known as the Guianan Saki and the Golden-faced Saki monkey 



Saki monkey! A type of New World monkey, found in Brazil, French Guiana, Guyana, Suriname, and Venezuela. This monkey mostly feed on fruits, but also nuts, seeds, and insects.


15. Hagfish
Hagfish are marine craniates of the class Myxini, also known as Hyperotreti. Despite their name, there is some debate about whether they are strictly fish (as there is for lampreys), since they belong to a much more primitive lineage than any other group that is commonly defined fish (Chondrichthyes and Osteichthyes). Their unusual feeding habits and slime-producing capabilities have led members of the scientific and popular media to dub the hagfish as the most "disgusting" of all sea creatures.



Hagfish are long, vermiform and can exude copious quantities of a sticky slime or mucus (from which the typical species Myxine glutinosa was named). When captured and held by the tail, they escape by secreting the fibrous slime, which turns into a thick and sticky gel when combined with water, and then cleaning off by tying themselves in an overhand knot which works its way from the head to the tail of the animal, scraping off the slime as it goes. Some authorities conjecture that this singular behavior may assist them in extricating themselves from the jaws of predatory fish. However, the "sliming" also seems to act as a distraction to predators, and free-swimming hagfish are seen to "slime" when agitated and will later clear the mucus off by way of the same travelling-knot behavior.      Article Source: Wikipedia  sharenator, iguides, & other web portal

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