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nesting instinct
Nesting instinct refers to an instinct or urge in pregnant animals to eat lots of food). It is found in a variety of animals (both mammals and birds) including humans.〔(【引用サイトリンク】title=Nesting Instinct in Pregnancy )〕
==In animals==
In rodents and lagomorphs, the nesting instinct is typically characterized by the urge to seek the lowest sheltered spot available; this is where these mammals give birth. Female dogs may show signs of nesting behavior shortly before their due date that include pacing and building a nest with items from around the house such as blankets, clothing, and stuffed animals. (They also sometimes do this in cases of false pregnancy, or pseudocyesis). Domestic cats often make nests by bringing straw, cloth scraps, and other soft materials to a selected nook or box; they particularly are attracted to haylofts as nest sites. In birds it is known as "going broody", and is characterized by the insistence to stay on the nest as much as possible, and by cessation of laying new eggs. Marsupials do not exhibit a nesting instinct per se, because the mother's pouch fulfills the function of housing the newborns.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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