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Jerboas
Jerboas (from ar, جربوع ') are hopping desert rodents found throughout North Africa and Asia, and are members of the family Dipodidae. They tend to live in hot deserts. When chased, jerboas can run at up to . Some species are preyed on by little owls (''Athene noctua'') in central Asia. Most species of jerboas have excellent hearing that they use to avoid becoming the prey of nocturnal predators. The typical lifespan of a jerboa is around 6 years. Taxonomy Jerboas, as previously defined, were thought to be paraphyletic, with the jumping mice (Zapodidae) and birch mice (Sminthidae) also classified in the family Dipodidae. However, phylogenetic analysis split all three as distinct families, leaving just the jerboas in Dipodidae and revealing them to be a monophyletic group. Anatomy and body features Jerboas look somewhat like miniature kangaroos, and have some external similarities. Both have long hind legs, short forelegs, and long tails. Jerboas move around in a similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allactaga Tetradactyla
The four-toed jerboa (''Allactaga tetradactyla'') is a rodent of the family Dipodidae and genus ''Allactaga'' that has four digits. It is the sole species in the subgenus ''Scarturus''. Four-toed jerboas are native to Egypt and Libya. They live in coastal salt marshes and dry deserts. Physical appearance Similar to the other jerboas in the genus ''Allactaga'', the four-toed jerboa are small hopping rodents with large ears and a long tail, with a black band near the white, feathery tip. The tail assists and serves as support when the jerboa is standing upright. They have long hind feet and short forelegs. The pelt of the four-toed jerboa is velvety in texture and the upper-parts are speckled black and orange, the rump orange, and the sides gray. The four-toed jerboa hind-limbs have an extra digit compared to other jerboas in the genus ''Allactaga''. The extra digit is smaller in size and nonfunctional compared to the other three digits. Nutrition Emerging at night, the four- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipodinae
Dipodinae is a subfamily of Dipodidae. Classification Subfamily Dipodinae *Tribe Dipodini **Genus '' Dipus'' *** Northern three-toed jerboa, ''Dipus sagitta'' **Genus '' Eremodipus'' *** Lichtenstein's jerboa, ''Eremodipus lichtensteini'' **Genus '' Jaculus'' ***Blanford's jerboa, ''Jaculus blanfordi'' ***Lesser Egyptian jerboa, ''Jaculus jaculus'' *** Greater Egyptian jerboa, ''Jaculus orientalis'' *** Thaler's jerboa, ''Jaculus thaleri'' **Genus ''Stylodipus'', three-toed Jerboas ***Andrews's three-toed jerboa, ''Stylodipus andrewsi'' ***Mongolian three-toed jerboa, ''Stylodipus sungorus'' ***Thick-tailed three-toed jerboa, ''Stylodipus telum'' *Tribe Paradipodini **Genus '' Paradipus'' ***Comb-toed jerboa The comb-toed jerboa (''Paradipus ctenodactylus'') is a species of rodent in the family Dipodidae Jerboas (from ar, جربوع ') are hopping desert rodents found throughout North Africa and Asia, and are members of the family Dipodidae. Th ..., ''Paradipus ctenodact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foramen Magnum
The foramen magnum ( la, great hole) is a large, oval-shaped opening in the occipital bone of the skull. It is one of the several oval or circular openings (foramina) in the base of the skull. The spinal cord, an extension of the medulla oblongata, passes through the foramen magnum as it exits the cranial cavity. Apart from the transmission of the medulla oblongata and its membranes, the foramen magnum transmits the vertebral arteries, the anterior and posterior spinal arteries, the tectorial membranes and alar ligaments. It also transmits the accessory nerve into the skull. The foramen magnum is a very important feature in bipedal mammals. One of the attributes of a biped's foramen magnum is a forward shift of the anterior border of the cerebellar tentorium; this is caused by the shortening of the cranial base. Studies on the foramen magnum position have shown a connection to the functional influences of both posture and locomotion. The forward shift of the foramen magn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Five-toed Pygmy Jerboa
The five-toed pygmy jerboa (''Cardiocranius paradoxus'') is a species of rodent in the family Dipodidae. It is monotypic within the genus ''Cardiocranius''. It is found in China, Kazakhstan, and Mongolia. Its natural habitat is temperate desert A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About on .... This species is not well known and its population and conservation status are unresolved. References ;Notes ;Sources * Dipodidae Rodents of China Mammals of Central Asia Mammals of Mongolia Mammals described in 1903 Taxa named by Konstantin Satunin Taxonomy articles created by Polbot {{rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiocranius
The five-toed pygmy jerboa (''Cardiocranius paradoxus'') is a species of rodent in the family Dipodidae. It is monotypic within the genus ''Cardiocranius''. It is found in China, Kazakhstan, and Mongolia. Its natural habitat is temperate desert A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About on .... This species is not well known and its population and conservation status are unresolved. References ;Notes ;Sources * Dipodidae Rodents of China Mammals of Central Asia Mammals of Mongolia Mammals described in 1903 Taxa named by Konstantin Satunin Taxonomy articles created by Polbot {{rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygyny
Polygyny (; from Neoclassical Greek πολυγυνία (); ) is the most common and accepted form of polygamy around the world, entailing the marriage of a man with several women. Incidence Polygyny is more widespread in Africa than in any other continent. Some scholars see the slave trade's impact on the male-to-female sex ratio as a key factor in the emergence and fortification of polygynous practices in regions of Africa. Polygyny is most common in a region known as the "polygamy belt" in West Africa and Central Africa, with the countries estimated to have the highest polygamy prevalence in the world being Burkina Faso, Mali, Gambia, Niger and Nigeria. In the region of sub-Saharan Africa, polygyny is common and deeply rooted in the culture, with 11% of the population of sub-Saharan Africa living in such marriages (25% of the Muslim population and 3% of the Christian population, as of 2019). Polygyny is especially widespread in West Africa, with the countries estimated t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dust Bathing
Dust bathing (also called sand bathing) is an animal behavior characterized by rolling or moving around in dust, dry earth or sand, with the likely purpose of removing parasites from fur, feathers or skin. Dust bathing is a maintenance behavior performed by a wide range of mammalian and avian species. For some animals, dust baths are necessary to maintain healthy feathers, skin, or fur, similar to bathing in water or wallowing in mud. In some mammals, dust bathing may be a way of transmitting chemical signals (or pheromones) to the ground which marks an individual's territory. Birds Birds cower close to the ground while taking a dust bath, vigorously wriggling their bodies and flapping their wings. This disperses loose substrate into the air. The birds spread one or both wings which allows the falling substrate to fall between the feathers and reach the skin. The dust bath is often followed by thorough shaking to further ruffle the feathers which may be accompanied with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerbillinae
Gerbillinae is one of the subfamilies of the rodent family Muridae and includes the gerbils, jirds, and sand rats. Once known as desert rats, the subfamily includes about 110 species of African, Indian, and Asian rodents, including sand rats and jirds, all of which are adapted to arid habitats. Most are primarily active during the day, making them diurnal (but some species, including the common household pet, exhibit crepuscular behavior), and almost all are omnivorous. The gerbil got its name as a diminutive form of "jerboa," an unrelated group of rodents occupying a similar ecological niche. Gerbils are typically between long, including the tail, which makes up about half of their total length. One species, the great gerbil (''Rhombomys opimus''), originally native to Turkmenistan, can grow to more than . The average adult gerbil weighs about . One species, the Mongolian gerbil ('' Meriones unguiculatus''), also known as the ''clawed jird'', is a gentle and hardy anima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainy Season
The rainy season is the time of year when most of a region's average annual rainfall occurs. Rainy Season may also refer to: * ''Rainy Season'' (short story), a 1989 short horror story by Stephen King * "Rainy Season", a 2018 song by Monni * ''The Rainy Season'', a 1993 album by Marc Cohn * ''The Rainy Season'', a 1999 novel by James Blaylock James Paul Blaylock (born September 20, 1950) is an American fantasy author. He is noted for a distinctive, humorous style, as well as being one of the pioneers of the steampunk genre of science fiction. Blaylock has cited Jules Verne, H. G. Wel ... * ''Rainy Seasons'' (film), a 2010 Iranian film {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mouse
A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus''). Mice are also popular as pets. In some places, certain kinds of field mice are locally common. They are known to invade homes for food and shelter. Mice are typically distinguished from rats by their size. Generally, when a muroid rodent is discovered, its common name includes the term ''mouse'' if it is smaller, or ''rat'' if it is larger. The common terms ''rat'' and ''mouse'' are not taxonomically specific. Typical mice are classified in the genus ''Mus'', but the term ''mouse'' is not confined to members of ''Mus'' and can also apply to species from other genera such as the deer mouse, ''Peromyscus''. Domestic mice sold as pets often differ substantially in size from the common house mouse. This is attributable to breeding a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabbit
Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit species and its descendants, the world's 305 breeds of domestic rabbit. ''Sylvilagus'' includes 13 wild rabbit species, among them the seven types of cottontail. The European rabbit, which has been introduced on every continent except Antarctica, is familiar throughout the world as a wild prey animal and as a domesticated form of livestock and pet. With its widespread effect on ecologies and cultures, the rabbit is, in many areas of the world, a part of daily life—as food, clothing, a companion, and a source of artistic inspiration. Although once considered rodents, lagomorphs like rabbits have been discovered to have diverged separately and earlier than their rodent cousins and have a number of traits rodents lack, like two extra i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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