Wolves

Researched by Marshal N.
2003-04


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Research Summary

Wolves are one kind of flesh eating mammal in the dog family.  Wolf’s scientific names are Canis Lupus (Grey wolf), Chrysocyon brachyurus (Maned wolf), and the Canis Rufus (Red wolf).  A grey wolf’s weight is 45-176 pounds, a maned wolf’s weight is 44-51, and the red wolf’s weight is 44-88.  A grey wolf’s length is 40-63 inches, a maned wolf’s length is 47-51 inches, and a red wolf’s length is 40-52 inches.  A grey wolf’s gestation period (pregnancy time) is 60-63 days, a maned wolf’s gestation is 62-66 days, and a red wolf’s gestation is 60-63days.  A grey wolf’s longevity is 8-16 years, a maned wolf’s longevity is up to 13 years, and a red wolf’s longevity is up to 14 years.  Wolves have been around a long time. They are endangered.

Wolves became endangered from the actions of humans.  They need human help to come back.    Humans hunted, trapped, poisoned, and even burned them alive.  Ranchers hated them for sometimes killing livestock.  Also hunters were afraid they were going to take most of the deer and wild game.  So they intentionally killed them. They got driven from Yellowstone but today they’re coming back.

There were some very important people who helped wolves.   Eldo Leopold was a naturalist who was the first to think wolves aren’t bad.    David Mech did most of the land research.

There are many different types of wolves.   Grey wolves are the biggest of them all.  There are also maned wolves, Mexican wolves, and the red wolf.   Dogs came from wolves. About 10,000 years ago humans domesticated something like a wolf and created what is now known as the dog.  In the dog family there is the wolf, coyote, jackal, foxes, and the domesticated dogs. 

Wolves have different body parts to help them live.  For example their teeth help them hunt.  Their canine teeth bite into prey (the animal that is hunted) and hold onto big ones like buffalo.  Incisors pick the meat off the bones.  The carnassials cut up the meat from the animal.  

Another important part of their body is the legs, which are long and have sharp claws so they can dig into the ground and run fast to get prey.  They also have very good hearing to tell if prey is near or if something is coming to attack them.  They don’t have really good eyesight so it’s good that they have good hearing.  Their fur can get 2 inches long!   In the winter and in the rain they will stay very warm.  They also have a very good sense of smell to sniff out food.  

Wolves will eat many things, like rodents, fruit, and roots.  When they are in big groups they go after prey like bison, elk, and deer, even moose.

 Many organizations help wolves, so they won’t become extinct.  These include Defenders of Wildlife, Sierra Club, and Wolf Haven.  Another is National Wildlife Federation.  They teach many around the world about wolves.  They also pay ranchers for cattle that were killed by wolves.  If wolves are removed from the endangered list they might be hunted again. There was a project to capture some Red wolves, 
 which were close to extinction.  They put them in captivity until they reproduced (had many pups) enough to be released.  Some are still in captivity so there are even more.  People are mostly releasing them in Yellowstone National Park.

Wolves can live in grasslands, forests, and swamps.  Wolves have quite a few different homes.  They live in small areas of Idaho, Minnesota, Europe, and Asia.  Grey wolves are mostly found in Alaska.   They are settling many wolves from Canada into Yellowstone National Park. 
 
  There is a certain way to tell a dog from a wolf.  Wolves have a straight tail.  If you can find any kind of curve in the tail, it’s a dog. 

 There are 4 main reasons why animals are endangered:  1. destruction of habitat, 2. wildlife trade, 3. over hunting, and 4. competition with domestic and nonnative animals.  Wolves are endangered mostly because of Destruction of habitat.  When people come to cut down trees they are destroying their habitat.  Also when farmers clear land and industries build new factories it destroys wolf habitat.  They are also over hunted because farmers are afraid wolves will kill too much of their livestock, and hunters are killing them because they don’t want wolves to take all the game.  Last wolves have a little competition with domestic and nonnative animals.  Wolves don’t get enough food. Why they attack livestock is because when farmers come they clear the area and take out what wolves normally eat.  

Interview Summary
Who I interviewed and what I learned


I interviewed Scott McCorquodale at his home on December 29, 2003.  He works for the Fish and Wildlife Service. He says,” Wolves have unique social behavior, they cooperate different than other animals.”  Wolves have been around a long time.  They have a big impact on wildlife.  There have been many attempts to bring wolves back. They have been successful.” 

 “The future is looking good for wolves,” says Scott,” They reproduce really fast.     Wolves help herds of animals by killing the sick and weak.  That helps the herds grow stronger and faster. 

In Yellowstone National Park the elk population was too high without wolves.  Many of the elk died of starvation.  Many groups are focusing on bringing wolves to Yellowstone National Park.  But even if they’re not endangered in Yellowstone in a couple years, it doesn’t mean they’re recovering adequately in Washington.

 I think Scott McCorquodale was a good person to interview.  He gave me a lot of information.  I’m glad I met him. 
 

Bibliography

DiSilverstro, Rodger. “ No Longer Top Dog: Studies of Coyotes in Yellowstone National Park.” U.S.:  New Wildlife Federation.  October 20, 1996.

Hildiyard, Anne.  Wolves Endangered Wildlife  and Plants of the World. 2001 Pp.1664-1670

Linden, Eugene.  Nature: Search for the Wolf Ranchers and Animal Lovers.  1992 Pp. 66

McCorqoundale, Scott.  Personal interview.  December 29, 2003

Mech, David.” Wolf” The World Book Encyclopedia 1991 Pp. 377-378

Norman, Berrot New York, London, Toronto, and Sydney: Wolves and Wild Dogs 1991Pp. 10-17 

Patent, Dorothy.  Gray Wolf,  Clarion Books.   7-61

Skow, John Wolves 1989

“The Return of the Wolf.”  Eugene, Organ New Dimension Media, Inc.

Wexo, John.  Wolves.  U.S.A:  Creative Education Inc.   Pp.  6-24

Wolf Adventures.  New York: Audubon’s Animal Adventures 1997

 


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