Japanese Dwarf Flying Squirrel Compilation

The Japanese dwarf flying squirrel (Pteromys momonga; Japanese: ???????; Hepburn: Nihon momonga) is one of two species of Old World flying squirrels.
It is native to Japan where it inhabits sub-alpine forests and boreal evergreen forests on Honshu and Kyushu islands.
It grows to a length of 20 cm (8 in) and has a membrane connecting its wrists and ankles which enables it to glide from tree to tree. During the day this squirrel hides in a hole, usually in a coniferous tree, emerging at night to feed on buds, leaves, bark, fruits and seeds. This squirrel faces no particular threats, has a wide range and is relatively common, and the International Union for Conservation of Nature lists it as a "least-concern species".
The Japanese dwarf flying squirrel is nocturnal, and during the day it rests in holes in trees. It eats seeds, fruit, tree leaves, buds and bark. It can leap from tree to tree using a gliding membrane called its patagium. The patagium works as a wingsuit enabling it to maneuver and glide through the air.

When it feeds, the Japanese dwarf flying squirrel assumes a hanging posture. It will pull a twig to its mouth with its forepaws if the twig is not strong enough to support its weight and obtain food at the tip.
While picking up food scattered on the ground, it will extend its body in an intermediate range around its body without moving its hind legs.
Multiple individuals of this species can be found grouped together on a single tree, however usually these individuals tend to be of the same sex when it is not mating season. Mating nests are usually shared by one breeding pair.
Japanese dwarf flying squirrels have evolved differently from other Sciuridae. The differences between Japanese dwarf flying squirrels and other Sciuridae is evident when comparing morphology of the mandible and genetic code. The mandible of the Japanese dwarf flying squirrel does not have a coronoid process unlike the American dwarf squirrels (Microsciurus). The marmots (Marmota) also have a more elongated mandible than the Japanese dwarf flying squirrel. This is due to phylogeny and ecology.There are also large differences in chromosome structure between P. momonga and the only other member of the Pteromys genus, Pteromys volans. Though they have the same number of chromosomes (2n=38), their karyotypes differ extensively due to pericentric inversions, tandem fusions, and deletion of large segments of the autosomes and the Y chromosome. Because of these deletions, the P. volans genome contains about fifteen percent less DNA than P. momonga. These findings suggest that the karyotype of P. momonga more closely resembles the ancestor of P. volans and P. momonga.
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►Music used in this video:
Midsummer Sky - Kevin MacLeod
Enchanted Journey - Kevin MacLeod

Видео Japanese Dwarf Flying Squirrel Compilation канала Animal Tales