你认识这六种奇特的杂交动物吗？--打印文章

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你认识这六种奇特的杂交动物吗？

作者：maisie 文章来源：本站原创点击数更新时间：2010-7-28 14:24:48 文章录入：maisie 责任编辑：maisie

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你认识这六种奇特的杂交动物吗？[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ +Pw0od$#F-9:A+&FroG]

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在动物王国中，有这么一个特殊的群体，它们的父母来自不同的种属，这个群体也就是所谓的“动物混血儿”。当然，这些混血动物有的是自然交配的结果，有的则是爱管闲事的人类有意为之。总之，它们为动物王国带来了新意和神奇。来看看下面这些奇特的杂交动物吧。

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Six amazing hybrid animals

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Ligers, tigons and grolar bears, oh my! Take a look at some of these otherworldly hybrid animals and you'll realize the possibilities are endless.

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Though they rarely occur in nature, individuals from different but closely related species do occasionally mate, and the result is a biological hybrid — an offspring that shares traits from both parent species. You may have heard of the mysterious sheep-pig creature, but it turns out that one isn't a true hybrid.

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Here are six bizarre, but truly unique half-breeds.[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ Qh\@+Yym W8FroG]

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Zebroids

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A zebroid is the offspring of a cross between a zebra and any other equine, usually a horse or a donkey. There are zorses, zonkeys, zonies, and a host of other combinations.

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Zebroids are an interesting example of hybrids bred from species that have a radically different number of chromosomes. For instance, horses have 64 chromosomes and zebra have between 32 and 44 (depending on species). Even so, nature finds a way.[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ t:}BOLD#&WO G/FroG]

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Savannah cats

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Savannah cats are -- contrary to popular belief -- from a coastal town in Georgia. But what they are is what you get from mixing your everyday domestic cat with an African Serval cat. Historians believe the first one was bred sometime in the mid 1980s by a cat breeder in, of all places, Pennsylvania. The International Cat Association first recognized the cat in 1996. The hybrid cat can now be purchased or perused in copies of 'Savannah's Illustrated' magazine.[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ Q+?Xj6:%_fA];cFroG]

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Ligers

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Ligers are the cross of a male lion and a female tiger, and they are the largest of all living cats and felines. Their massive size may be a result of imprinted genes which are not fully expressed in their parents, but are left unchecked when the two different species mate. Some female ligers can grow to 10 feet in length and weigh more than 700 pounds.

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Ligers are distinct from tigons, which come from a female lion and male tiger. Various other big cat hybrids have been created too, including leopons (a leopard and a lion mix), jaguleps (a jaguar and leopard mix), and even lijaguleps (a lion and jagulep mix).[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ €}JPM&=Otb;i~vO46XFroG]

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Wholphin

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A cross between a false killer whale and an Atlantic bottlenose dolphin, wholphins are hybrids that have been reported to exist in the wild. There are currently two in captivity, both at Sea Life Park in Hawaii.

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The wholphin's size, color, and shape are intermediate between the parent species. Even their number of teeth is mixed; a bottlenose has 88 teeth, a false killer whale has 44 teeth, and a wholphin has 66.[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ 4c?o-?MC{*ze,xFroG]

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Grolar bears

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The offspring of a grizzly bear and a polar bear, a grolar bear is one beast you don't want to meet in the woods. Interestingly, unlike many hybrid animals on this list, grolar bears are known to occur naturally in the wild.

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Some experts predict that polar bears may be driven to breed with grizzly bears at an increased frequency due to global warming, and the fact that polar bears are being forced from their natural habitats on the polar ice.[文章版权禁止转载:考试与评价 http://www.trgroup.com.cn/te/ 2?r(UKfqRxccxFroG]

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Beefalo

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Beefalo are the fertile offspring of domestic cattle and American bison. Crosses also exist between domestic cattle and European bison (zubrons) and yaks (yakows). The name given to beefalo might be the most suggestive, since the breed was purposely created to combine the best characteristics of both animals with an eye towards beef production.

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A USDA study showed that beefalo meat, like bison meat, tends to be lower in fat and cholesterol. They are also thought to produce less damage to range-land than cattle.

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