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  • 2e klas havo | 982 woorden
  • 8 augustus 2005
  • 54 keer beoordeeld
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The Wolf Pack Wolves are an extremely social animal. They exist as a social unit called a pack. Wolves travel and hunt in a group and perform almost all other activities in the company of fellow wolves. The pack, the basic unit of wolf social life, is usually a family group. It is made up of animals related to each other by blood and family ties of affection and mutual aid. The core of a pack is a mated pair of wolves - an adult male and female that have bred and produced young. The other members of the pack are their offspring: young wolves ranging in age from pups to two and three-year-olds. Pack sizes vary, most packs have 6 or 7 members, although some may include as many as 15 wolves. The size depends on many variables including the current numbers of the wolf population, the abundance of food, and social factors within the wolf pack.Within each pack is an elaborate hierarchy. It may consist of a single breeding pair, the Alpha male and female, a lower group consisting of non-breeding adults, each with its own ranking, a group of outcasts, and a group of immature wolves on their way up. Some of the younger wolves of the pack may leave to find vacant territory and a mate.Individual wolves in a pack play different roles in relation to the others in the group. The parent wolves are the leaders of the pack - the alpha male and alpha female. (Alpha is the first letter in the Greek alphabet.)The alpha male and female are the oldest members of the pack and the ones with the most experience in hunting, defending territory, and other important activities. The other pack members respect their positions and follow their leadership in almost all things, The alpha wolves are usually the ones to make decisions for the pack when the group should go out to hunt or move from one place to another.The other Pack members all have positions in the hierarchy inferior to those of the alpha male and female. The young adult wolves, who are the grown-up offspring of the alpha pair, have their own special roles under the leadership or their parents. Some of them me able to "boss around," or dominate, their sisters and brothers because they have established themselves as superior in some way. This superiority might be physical-larger size or greater strength - but it can be based on personality Dominant wolves in the pack usually have more aggressive and forceful personalities than their relatives of the same age.The juveniles and pups-wolves under two years old do not occupy permanent positions within the pack hierarchy. They all take orders from their parents and older brothers and sisters, but their relationships with each other change frequently. During their play and other activities, they are constantly testing one mother to find out who will eventually be "top wolf" in their age group.Relationships among creatures that live close together in groups are often very complicated, like members of a wolf pack. Studies of captive wolves and wolf packs in the wild have shown that many complex rules of behavior seem to govern the way that the animals relate us each other, the methods that wolves use to communicate with fallow pack members are also quite elaborate. Wolf Communication Wolves use body language and facial expressions to communicate with each other. Dominant wolves will freely look other animals directly in the eye, this declares and reinforces their superior rank.A subordinate wolf will cringe towards the leader with tail low and bent legs, ears back and down, in a submissive nature. At other times, active submission involves a group of subordinate wolves surrounding the dominant wolf with their noses up against it. Sometimes the pack will howl.Various facial muscles, eyes, ears and the nose are extremely important when wolves are expressing their feelings. Bared teeth, an open mouth, ears erect and pointed forward indicate a threat by a dominant wolf.Wolves are also very territorial animals and do not readily share it with wolves who are not members of their pack.Wolves communicate and mark their territories by scent. They often do this by urinating near the edges of their territory, and on stumps, rocks and logs that are within their territory. Most of this is done by the dominant wolves, usually the alpha male.
What do wolves eat? Wolves are carnivores (meat eaters) but they will eat other foods as well. Their diet ranges from big game, such as elk and moose, to earthworms, berries and grasshoppers. To avoid using too much energy catching their food, wolves prey on weaker members of a herd, such as old, young or sick animals. In summer, when the herds migrate, wolves eat mice, birds and even fish. They may also eat carrion. Wolves eat their food very quickly, probably to protect it from being stolen, and to decrease the chance of attack from other predators. They eat the best parts first, and come back later for the remainder, as they can't afford to be wasteful. They will hide food in the snow, or icy soil, which helps to preserve it, and protect it from scavengers. Wolves can eat every 5-6 hours when there is plenty of food available, or they can fast and live on scraps for 2 weeks when there is less food around. Their digestion is very efficient, with all but 5 percent of large meat feeds able to be digested. Any splinters of bone that are not broken down somehow become wrapped in undigested hair, which protects the intestines from injury. Pups are fed by the adults who disgorge fresh meat from their stomachs, or carry back fresh pieces of meat to the den. Biologists learn much about the diet of wolves by studying their waste products, which are called 'scats'.

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