Pennsylvania mammals

Gray Wolf in Pennsylvania

Canis lupus

Native to Pennsylvania SX Presumed Extirpated in Pennsylvania

Not listed as nonindigenous in Pennsylvania by USGS NAS; native to its Pennsylvania range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Gray Wolf in Pennsylvania, by the numbers

Presumed Extirpated in Pennsylvania 45th most recorded of 79 mammals logged in Pennsylvania

25 occurrence records

Records from 2000–2026.

25 total records count every Pennsylvania occurrence from GBIF and iNaturalist; the monthly chart covers the 18 records with a full observation date.

When the gray wolf was recorded in Pennsylvania

Most historical records fall in June.

18 Pennsylvania occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Pennsylvania records (table)
MonthRecords
January0
February3
March2
April3
May1
June6
July1
August1
September0
October0
November0
December1

Monthly gray wolf occurrence records (iNaturalist and GBIF) in Pennsylvania, 2000–2026.

Seasonality

Historical records in Pennsylvania peak in June.

Occurrence map

Where Gray Wolf has been recorded in Pennsylvania

25 records mapped · zoom and drag to explore

25 Pennsylvania records mapped

Where gray wolf encounters are recorded

Park, forest, or monumentiNaturalist records
Cook Forest State Park 1
Susquehannock State Forest 1

Protected places with the most gray wolf records, from the USGS Protected Areas Database plus named mountain ranges, where encounters are most often recorded, not a full breakdown, so they don't sum to the total. Keep your distance and never approach one.

Where it's recorded in Pennsylvania

CountyRecords
Lehigh County 9
McKean County 3
Philadelphia County 3
Montgomery County 2
Allegheny County 2
Columbia County 1
Clarion County 1
Huntingdon County 1
Potter County 1
Washington County 1
Clinton County 1

The complete county distribution, spread across 11 Pennsylvania counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Pennsylvania’s gray wolves were trapped and shot out of the state more than a century ago, and NatureServe now lists the species SX, presumed extirpated, within Pennsylvania. The 25 records logged here come entirely from GBIF rather than iNaturalist, a pattern that points to museum specimens, historical trapping records, or misidentified dogs and coyotes rather than photographs of a living population.

Reports show loose clusters in late winter and spring, near Pymatuning, Presque Isle, and the Delaware Water Gap, but with no resident wolves left in the state, that pattern says more about when old records were logged than about any animal currently moving through the landscape. A modern wolf sighting in Pennsylvania would be a rare wanderer, not evidence of a returning population.

Gray Wolf in other states

View all states →

More mammals in Pennsylvania in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"