美国布朗大学生物学Assignment代写:杂食性动物

从技术上讲,土拨鼠是杂食性的,但土拨鼠比大多数物种更具食草性。他们吃草,浆果,蒲公英,款冬,酢浆草和农作物。然而,他们会用堕落的幼鸟,昆虫,蜗牛和幼虫来补充他们的饮食。如果土拨鼠可以从露水或植物汁中获取水,则不需要喝水。啮齿动物储存脂肪和冬眠以度过冬天,而不是缓存食物。土拨鼠被人类,狐狸,土狼和狗捕食。年轻人可能被鹰和猫头鹰带走。从来没有发现土拨鼠远离它们的洞穴,它们在土壤中挖掘并用于睡眠,逃避掠食者,养育幼崽和冬眠。土拨鼠在三月或四月从冬眠中醒来后交配。这对在妊娠31或32天仍留在巢穴中。雄性在雌性分娩前离开巢穴。通常的垃圾包括两到六只盲目的幼崽,它们在眼睛睁开并且它们的皮毛长大后从巢穴中出现。接近夏天结束时,年轻人开始建造自己的洞穴。土拨鼠可能在接下来的春天繁殖,但大多数在两岁时变得成熟。在野外,大多数土拨鼠生活两到三年,最多六年。圈养土拨鼠可能活14年。 美国布朗大学生物学Assignment代写:杂食性动物 Technically, woodchucks are omnivorous, but woodchucks are more herbivorous than most species. They graze, berries, dandelions, coltsfoot, sorrel and crops. However, they supplement their diet with fallen young birds, insects, snails and larvae. If the groundhog can get water from dew or plant juice, there is no need to drink water. Rodents store fat and hibernate to spend the winter instead of caching food. Groundhog is preyed by humans, foxes, coyotes and dogs. Young people may be taken away by hawks and owls. Groundhogs have never been found far from their caves, they dig in the soil and sleep, escape predators, raise young cubs and hibernate. Groundhog waking up from hibernation in March or April and mating. This pair remains in the nest for 31 or 32 days of gestation. Males leave the nest before the female gives birth. The usual rubbish consists of two to six blind pups that emerge from the nest after the eyes are opened and...
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