西伯利亚虎(学名:Panthera tigris ssp.altaica):又称东北虎,是虎的亚种之一。是现存体重最大的肉食性猫科动物,其中雄性体长可达3米左右,尾长约1米,成年雄性平均为250千克,也有达到350千克左右。野生西伯利亚虎体色夏毛棕黄色,冬毛淡黄色。背部和体侧具有多条横列黑色窄条纹,通常2条靠近呈柳叶状。头大而圆,前额上的数条黑色横纹,中间常被串通,极似“王”字,故有“丛林之王”之美称。栖居于森林、灌木和野草丛生的地带。独居,无定居,具领域行为,活动范围可达100平方公里以上。夜行性,感官敏锐,性凶猛,行动迅捷,善游泳,不会爬树,很少袭击人类。东北虎主要捕食鹿、羊、野猪等大中型哺乳动物,也食小型哺乳动物和鸟。捕食方式为偷袭。孕期为103-105天,一胎生2-4仔,2-3年生产一次,野生寿命15至17年,最高为20年,人工饲养情况下寿命为20-25年。分布于亚洲东北部,即俄罗斯西伯利亚地区、朝鲜和中国东北地区。由于栖息地被破坏与偷猎,至2015年初统计,世界上仅存野生西伯利亚虎仅500头之内。Siberian tiger (Panthera tigris) ssp.altaica )Also known as the Amur tiger, is one of the subspecies of tiger. It is the largest carnivorous feline with the body length of about 3 meters and the tail length of about 1 meter. The average adult male is 250 kg, and some are about 350 kg. The wild Siberian tiger has brown yellow summer hair and light yellow winter hair. On the back and side of the body, there are many black narrow stripes, usually 2 close to each other and are like willow leaves. The head is large and round, with several black stripes on the forehead. It is often colluded in the middle, which is very similar to the word "King". Therefore, it has the reputation of "king of the jungle".Inhabits areas of forest, shrub and weeds. Living alone, no settlement, with field behavior, activity range of more than 100 square kilometers. Nocturnal sex, keen senses, ferocious, quick action, good at swimming, can not climb trees, rarely attack human. Northeast Tiger mainly preys on deer, sheep, wild boar and other large and medium-sized mammals, but also eat small mammals and birds. The way of predation is sneak attack. The gestational period is 103-105 days. 2-4 offspring are born once every 2-3 years. The wild life span is 15-17 years, the maximum is 20 years. The life span of artificial breeding is 20-25 years.It is distributed in Northeast Asia, that is, Siberia, North Korea and Northeast China. Due to habitat destruction and poaching, by the beginning of 2015, there were only 500 Siberian tigers left in the world.