When the baby porcupine is born, its quills are soft. They harden about an hour after birth. AnswerParty on!
Fauna of Asia
The Hystricognathi are an infraorder of rodents, distinguished from other rodents by the bone structure of their skulls. The masseter medialis (a jaw muscle) passes partially through the infraorbital foramen and connects to the bone on the opposite side. This, together with their lack of an infraorbital plate and the relative size of the infraorbital foramen, distinguishes hystricognaths from other rodent groups.
New World porcupine
Fauna of Asia is all the animals living in Asia and its surrounding seas and islands. Since there is no natural biogeographic boundary in the west between Europe and Asia, the term "fauna of Asia" is somewhat elusive. Asia is the eastern part of the Palearctic ecozone (which in turn is part of the Holarctic), and its South-Eastern part belongs to the Indomalaya ecozone (previously called the Oriental region). Asia shows a notable diversity of habitats, with significant variations in rainfall, altitude, topography, temperature and geological history, which is reflected in its richness of animal life.
The formation of the Asian fauna began in the Mesozoic with the splitting of Laurasian supercontinent. Asia blends elements from the both ancient supercontinents of Laurasia and Gondwana. Gondwanian elements were introduced from Africa and by India, which detached from Gondwana approximately 90 MYA, carrying its Gondwana-derived flora and fauna northward. Glaciation during the most recent ice age and the immigration of man affected the distribution of Asian fauna (see also Sahara pump theory). Eurasia and North America were many times connected by the Bering land bridge, and have very similar mammal and bird faunas, with many Eurasian species having moved into North America, and fewer North American species having moved into Eurasia (many zoologists consider the Palearctic and Nearctic to be a single Holarctic ecozone). See also List of extinct animals of Asia.
African Brush-tailed Porcupine
The New World porcupines, family Erethizontidae, are large arboreal rodents, distinguished by their spiny coverings from which they take their name. They inhabit forests and wooded regions across North America, and into northern South America. Although both the New World and Old World porcupine families belong to the Hystricognathi branch of the vast order Rodentia, they are quite different and are not closely related.
The African Brush-Tailed Porcupine (Atherurus africanus) is a species of rat-like Old World porcupine called "brush-tailed porcupines". The brush-tailed porcupines live in forests, usually at high elevations. They are nocturnal and during the day they sleep in caves and burrows. The brush-tailed porcupine is one of the biggest rodents in Africa, with a body length of 36.5–60 cm (14–24 in), discounting a tail of about 10–26 cm (4–10 in) and weigh as much as 2.9 kg (6.4 lb).]citation needed[ It has an elongated rat-like face and body and short legs, tipped with clawed and webbed feet. Unlike most other porcupines, the brush-tailed porcupine has lighter and smaller quills. On the tail, these quills are thinner and brush-like. These can make noise when rattled. Brush-tailed porcupines live in small family groups of about eight members. Different family groups can share resources. When attacked by a predator, the porcupine raises its quills so it looks twice its size, rattles its tail quills, and stomps its feet. As with all porcupines, the brush-tailed porcupine would back into the attacker and inflict damage with its quills.
The brush-tailed porcupine is mostly herbivorous. When alone eating, the porcupines can be quite nervous. During the breeding season, males and females form pair bonds to get acquainted. The African brush-tailed porcupine has a long pregnancy compared to other rodents: 110 days at the longest. The young are born well-developed or precocial. Porcupines reach maturity at two years of age.
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