The biggest bear today is white
It should be said that this is the largest in the worldthe bear lived long enough, despite the presence of a large number of serious injuries: on his petrified remains there are traces of battles. Fights, presumably, happened for the attention of the female and for the prey. The biggest bear was a large mammal.
It should be said that for a long time representativesThis large family as a result of natural selection significantly decreased in size. So, the only surviving representative, spectacled bear, weighs no more than one hundred and forty kilograms.
For today the most dimensionalare considered individuals with a weight of 400-500 kilograms. Today the biggest bear is white. These animals settle in large areas, but do not actively protect them.
The biggest bear can be quiteaggressive. This is especially evident during the mating season. At this time, often fights males with each other. Female, on the contrary, are relatively mild in character. They are more benevolent and patient. Bears often arrange lairs nearby. Often, females take other people's cubs, treating them as their own. There were also cases when two females lived in one lair.
The biggest bear starts mating in the summeror in the spring. Near the female is going from three to seven males. The formed pair remains briefly together - not more than three days - for the time of the female's presence in estrus (estrus period).
The largest bear migrates widely enoughto the very pole from the coasts of the Arctic Ocean. Pregnant females go to the mainland in autumn to arrange a lair. The cubs are born in the coldest period. Before you lie down in the den, the females feed enough fat, which is consumed throughout the winter.
It should be said that the places convenient for the devicelair, not so much. For them, multi-meter steady snow deposits are necessary. As a rule, they are formed in hilly areas or in low-mountainous low mountains. Some are located in the interior of the island, others are on the shore. Females also have favorite places where they gather for delivery. For example, on the island of Franz Joseph and Wrangel Island, there are about one hundred and fifty to two hundred lairs every year. Because of such a dense cluster of moths, these places are also called "maternity homes".
Bears lie dormant not immediately afterdevice dens, and by mid-November. By this time the development of oocytes begins. Females lie in the den for six months. And in the midst of winter babies are born. As a rule, two cubs appear. Although the number of young can be from one to three.
