Lemurs are primates endemic to the island of Madagascar. The name 'lemur' itself comes from the word 'Lemures' which comes from mytologi Roman which means ghosts or spirits, which was first used to describe types of lemurs are nocturnal and movement is slow, but the latter is more geared to the type of primate native to Madagascar this.

Although lemurs are one species of primates, but they were not the result of the evolution of monkeys and apes. They only have the same morphology and habits with other primate species.

Lemurs arrived in Madagascar around 62 to 65 million years ago across the seas. Since that time, lemurs live and adapt to the environment of Madagascar. By the time humans first arrived on the island about 2000 years ago, there lemur the size of a gorilla.

Currently there are about 100 known species of lemurs, and most of these species have been discovered or promoted to be recognized as a separate species since the 1990s. However, lemur taxonomic classification is controversial and varies depending on which species concept is used.

Lemur sizes range from 30 grams weighing up to 9 kg. Lemurs have much in common with basal primates, such as the number of fingers on their hands and feet and they have nails instead of claws. However, the ratio of brain size to body they are smaller than an anthropoid primates.

Lemur arguably the most social of primates strepsirrhine and communicate using smell and sound than with visual signals. Lemur has a low basal metabolism, have a mating season, dormancy (such as hibernation), or the dominance of female lemurs.

Lemurs are the main food fruits and leaves. Although the food of the lemurs are the same, but different lemur species have 'game' their own, despite living in the same forest.

More focused research on lemurs in the field of Taxonomy and specimen collectionselama 18th century and the 19th century. Modern research on new lemur began in the early 1950s and 1960s. Lemur is an important part in the study because they have a mix of primitive characteristics with the properties of anthropoid primates that might explain the evolution of primates and humans.

Unfortunately, many lemur species are threatened with extinction due to habitat loss and poaching. Although the tradition of local residents tend to help protect lemurs and their forests, but illegal logging, poverty, and political conflict makes conservation of these primates to be difficult.

Typically, considered the most dangerous wild animals in Japan is Jepanese Giant Hornet, which kills an average of 40 people per year. However, the largest, most powerful land predator in Japan is the brown bear, and, perhaps most brutal bear attack in history occurred in the village of Sankebetsu, Hokkaido, in 1915. At that time, Sankebetsu is a pioneer village, with very few people who live in an area that is mostly wild. The area was inhabited by brown bears, including the giant male bear known as Kesagake. Kesagake usually visit Sankebetsu to eat corn-corn to be harvested. Due to being a nuisance, he was shot by two villagers and fled to the mountains, were injured. The villagers believe that, after being shot, the bear will learn to fear humans and away from plants. They were wrong.

On December 9, 1915, Kesagake appears again. He entered the Ota family home, at which time the farmer's wife was alone caring for her baby. The bear attacked the baby, kill him, then chase the baby's mother. He tried to defend himself by throwing firewood, but was eventually dragged into the woods by a bear. When people come in, they found an empty house with floors and walls covered in blood. Thirty people went into the forest, determined to kill the bear and bring the bodies of the poor woman. They found Kesagake and shot him again, but failed to kill him. The animal ran away and they found the woman's body had been partially eaten and partially buried under the snow, where the bear store it for later consumption.

The bear was later returned to the Ota family farms, and armed guards were sent afterwards. But this makes the other houses in the village were not protected, and Kesagake take advantage of this, attacked the family home Miyoke and injuring everyone in it. Although some people managed to escape, two children were killed and so was a pregnant woman, who according to witnesses who survived, pleading for the life of her unborn baby when a large bear it forward to attack. Of course, it was all in vain; Kesagake kill him as well. When the guards realized their mistake and returned home Miyoke, they found the bodies of two children, the woman and the fetus she is carrying all lying on the floor full of blood. In two days, Kesagake killed six people. The villagers fear and most of the guards left their posts for fear.

A famous bear hunter told about the incident and he identified the bear as Kesagake and told that the bear had been killed before the attack Sankebetsu. At first he refused to participate in the hunt, but eventually he joined the group, and on December 14, he was the one who finally killed Kesagake. The bear was nearly three meters and weighing 380 kg. Human remains found in his stomach. Terrible incident did not end there; some survivors of the attack died of their wounds. One of the victims drowned in the river. This region was soon abandoned by villagers and became a ghost town. Even today, incidents of animal attacks Sankebetsu remains the worst in Japan's history, and one of the most brutal of history.