- 95 wolves in 10 packs, including 8 breeding pairs, lived primarily in Yellowstone in 2013. These numbers are similar to previous years.
- 24% of the wolf population (21 wolves) has been radio collared.
- Pack size ranged from 2 to 18, averaging 8.6.
- Most packs had pups, with an average of 4.6 pups per pack. At least 41 pups survived to the end of the year.
- State-managed wolf hunts in 2013 did not significantly affect Yellowstone wolves.
- Incidences of mange decreased, and distemper was not a mortality factor in 2013.
- Wolf numbers have decreased by about 45% since 2003, likely due to fewer elk.
To learn more visit these links: