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Post by Admin on Aug 31, 2013 16:59:35 GMT
www.northernforum.org/servlet/download?id=3167 newswatch.nationalgeographic.com/2012/04/30/the-biggest-of-the-big-the-brown-bears-of-alaska-and-the-far-east/ The black grizzly or Ussuri brown bear (Ursus arctos lasiotus) is another big bear occasionally attaining a size greater than the Kamchatka brown bear. These bears are found in the Amur and Ussuri River regions of the Russian Far East, northeastern China, the Korean Peninsula and Japan. In the Amur region these bears cross paths with Siberian (Aumr) tigers on rare occasions, primarily because there are so few Siberian tigers left in the world. Tiger attacks on bears have been reported when the bears were in hibernaculum as well while ambulatory. Supposedly, the brown bears are attacked with more frequency than the smaller Asiatic black bears because of habitat preference and an inability to climb trees. But these bears also attack the typically smaller tigers on occasion. The bears are more commonly known to track tigers, following the big cats’ foot prints to ungulate kills, where they ultimately force the cat off the carcass, taking possession of it.
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Post by Admin on Sept 2, 2013 11:51:40 GMT
The Bear Almanac - Second Edition: Tigers prey on bears in their respective habitat. The diet of some Siberian tigers is 5 to 8 percent Asiatic black bear, though the bears have been observed displacing tigers from their kills. Bengal tigers kill sun bears, though they will often avoid them, and they must ambush or sneak up on a sloth bear. Brown bears are a more formidable challenge for a tiger, and most of those bears killed are young, orphaned, or bears too old or weak to defend against a tiger.
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Post by malikc6 on Sept 3, 2013 6:51:16 GMT
Females and sub adults are the only bears tigers will go after generally, period. Anyone trying to argue that they also prey on mature male grizzly bears is clearly a fanboy. That's like saying that male lions go after mature male buffalo or a cougar going after a fully grown male black bear.
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Post by Admin on Sept 5, 2013 14:34:43 GMT
Females and sub adults are the only bears tigers will go after generally, period. Anyone trying to argue that they also prey on mature male grizzly bears is clearly a fanboy. That's like saying that male lions go after mature male buffalo or a cougar going after a fully grown male black bear. Tigers will occasionally prey upon mature male sun bears, sloth bears, and more uncommonly a mature male Asiatic black bear. However, even those tigers which acquire a taste for bear flesh primarily seeks out adolescent bears ( any species ). No tiger in his right mind is going to challenge a healthy mature male brown bear as prey or in defense of a carcass unless that tiger has a significant weight advantage over the bear, which would be out of the ordinary. This has never been known to happen. There was a Siberian tiger who became famous among the naturalists studying the big tigers in their natural habitat in the Siberian taiga. He was known as Misha by the Russians and named Dale by American field biologists. He was collared and his movements well known. Dale was a prime male tiger, weighing 445 pounds. He was unusual in the fact that he had acquired a taste for bear flesh. Normally, bears make up a very small percentage of a tiger's diet; less than 2%. But, Dale fed primarily on bear flesh. Among the many bears that Dale had ambushed and killed, perhaps numbered in the hundreds, he killed only two adult brown bears, both female. The second adult she-bears he killed weighed 440 pounds. She was a huge specimen of female Ussuri brown bear. She was the biggest bear on reliable record ever having been killed by a tiger. She was also the only bear known to be killed by a tiger at what is considered as weight parity.
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Post by Admin on Sept 11, 2013 15:41:56 GMT
animalsversesanimals.yuku.com/reply/31307/The-Document-of-Slaght-et-al-2005-about-the-tiger-weight#reply-31307 Here the data can be read showing that Dale, Dima, and Misha are one and the same; the famous 445 pound prime male "bear killer". The fact that Dale was renowned as "the bear killer", being the only Siberian tiger ever known to have acquired a taste for bear flesh and making the bear his primary prey animal, and in doing so having only killed two adult brown bears in his "bear killing career", leads me to stronly believe that the killing of adult female brown bears is an extremely rare event. Also, the fact that in both incidences, the tiger had a prolonged bloody fight with each bear, after ambushing them, and not coming out unscathed in either fight, leads me to believe that even with a brown she-bear as his antagonist, the tiger will not be victorious every time. Pt-20 aka Dima, Dale, and the first Misha ( there have been three tigers by that name ), are all one and the same Siberian tiger known as "the bear killer"; roughly 80% of his diet being adolescent bears; both Asiatic black bears and brown bears. I have also heard of a Sumatran tiger having acquired a special taste for bear flesh; sun bears.
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Post by Admin on Sept 14, 2013 20:09:32 GMT
[Weights of mature males ( rough averages ) Siberian tiger - 420 pounds. Bengal tiger - 460 pounds. Ussuri brown bear - 580 pounds. inland grizzly bear - 550 pounds. The normal maximum weight of tigers is roughly 600 pounds while the normal maximum weight of a brown bear is roughly 1,000 pounds. We can safely say that the brown bear will tyically have a weight advantage over the tiger of from 100 to 500 pounds. Note: both the tiger and the brown bear can reach weights above what is considered as their normal maximum weights; this being weights above the realm of normal. The record wild tiger was killed in 1967 which weighed 857 pounds. The record brown bear was killed on Kodiak Island in 1894 and weighed 1,656 pounds; nearly double the weight of the record tiger. [/b]
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Post by Admin on Sept 17, 2013 21:34:58 GMT
BEARS by Richard Perry: The only predator which may possibly have taken a significant toll of bears at one time is the tiger. The Russian, N.A.Baikov, describes how the large Manchurian tigers which in his day, in the early years of this century ( 2oth ) grew to a length of twelve or possibly thirteen feet and to a weight of six or seven hundred pounds, could handle brown bears of almost their own weight, by stalking and ambushing them on a cliff or in a fallen wind-break. When an unsuspecting bear ambled into the ambush, the tiger would spring on it from above, seize it by one paw under the chin, by the other at the neck, and would bite through the vertebrate. Should a bear sense dangerin time, it take refuge in the nearest tree. In this case the tiger might wait under the tree for the bear to growimpatient and descend, but would more often feign a departure and hide-up nearby until the bear came down, when it would attack again. I see several things here where I strongly disagree with the Russian hunter. #1 - When there were less people on the taiga and prey animals were far more plentiful, as were the predators, not only was the tiger of larger size, but also the brown bear. #2 - Brown bears do not climb trees to escape danger. Simply not their way. #3 - Tigers stalk and kill adolescent brown bears; on rare occasion an adult sow bear.
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