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1. Accuracy and Precision of Estimating Age of Gray Wolves by Tooth Wear [usgs_npwrc_graywolves]
We evaluated the accuracy and precision of tooth wear for aging gray wolves (Canis lupus) from Alaska, Minnesota, and Ontario based on 47 known-age or known-minimum-age skulls. Estimates of age using ...

2. Lack of Reproduction in Muskoxen and Arctic Hares Caused by Early Winter [usgs_npwrc_muskoxen]
A lack of young muskoxen (Ovibos moschatus) and arctic hares (Lepus arcticus) in the Eureka area of Ellesmere Island, Northwest Territories (now Nunavut), Canada, was observed during summer ...

3. Leadership in Wolf, Canis lupus, Packs. [usgs_npwrc_canislupus]
L. David Mech examined leadership in Wolf (Canis lupus) packs based on published observations and data gathered during summers from 1986 to 1998 studying a free-ranging pack of Wolves on Ellesmere ...

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