False pregnancy, or pseudocyesis, is a common condition in female intact dogs. Signs include swelling of the mammary glands, lactation, not eating, and "mothering" small objects.
假孕,或称为假妊娠,

常见于未绝育母犬的状况。临床

括:乳腺肿胀、泌乳、绝食和对
些物品

母性。
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Every week the US Department of Agriculture (USDA) and Panamanian government drop sterilised screwworms, a parasitic flesh-eating fly larva that feeds on livestock, out of a plane on the Panama-Colombia border in order to stop the creatures from breeding.
每周,美国
业
和巴拿马政府都会在巴拿马和哥伦比亚边境用飞机投放绝育
螺旋虫(一种苍蝇幼虫,寄生且吃牲畜
活体组
),以阻止这种生物
繁殖。