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Pinedale Online > News > August 2010 > Wolf weights

Wolf table. Photo by US FWS.
Wolf table
Click on the table to enlarge it to read the data on the wolves originally translocated into Yellowstone National Park in 1995 and 1996.
Wolf weights
by Cat Urbigkit, Pinedale Online!
August 23, 2010

There has been much discussion of late about wolf weights
in the Rocky Mountains. While weights of existing pack members in the wild would be hard to determine, here are the weights of the original wolves released in Yellowstone National Park in 1995 and 1996. These are the January weights of the wolves that were captured in Canada.

Of the adult wolves, the smallest females weighed 75 and 89 pounds, and the largest male weighed 130 pounds. The adult wolves weighed 92, 98, 112, 113, 115, and several weighed 122 pounds. The pups weighed from 72 to 122 pounds.

Check out the table for the details. The table is from the
Yellowstone Wolf Project Biennial Report 1995 and 1996
published by Yellowstone Center for Resources, Yellowstone
National Park.

More recent information can be obtained from the Montana
wolf hunt, which took place in 2009. Of that hunt, 22 juveniles (average weight of 62 pounds) were harvested, 22 yearlings (average weight of 80 pounds) were harvested, and 27 adults(average weight of 97 pounds) were harvested. Of the adults, one weighed 117 pounds.

Idaho’s 2009 wolf hunt resulted in 135 wolves that were legally harvested. Only 22 wolves were weighed, with the average being 84 pounds (ranging from 54 to 118 pounds). The mean weight for juveniles was 60 pounds, and the mean weight for "subadults/adults" was 90 pounds. One wolf was omitted from the tally because it had been partially field dressed, but weighed 126 pounds with the stomach removed.

Related Links
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  • Pinedale Online > News > August 2010 > Wolf weights

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