Quiller
Erethizon dorsatus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderRodentia (Rosegadors)
- FamilyErethizontidae (New World Porcupines)
- GenusErethizon
- SpeciesErethizon dorsatus (Quiller)
Closest Relatives at Grand Teton National Park
Yellow-bellied Marmot
Marmota flaviventris
Uinta Ground Squirrel
Urocitellus armatus
Golden-mantled Ground Squirrel
Callospermophilus lateralis
American Red Squirrel
Tamiasciurus hudsonicus
American Beaver
Castor canadensis
Tamia mineur
Tamias minimus
Muskrat
Ondatra zibethicus
Tamia améne
Tamias amoenus
Uinta Chipmunk
Tamias umbrinus
Northern Pocket Gopher
Thomomys talpoides
Deer Mouse
Peromyscus maniculatus
Western Jumping Mouse
Zapus princeps
📅 Monthly Probability
☀️🌙 When They're Spotted
Active throughout day and night · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
Quick answers
What are the chances of seeing a Quiller in Grand Teton National Park?
About 10% of visitor-days record a Quiller sighting in Grand Teton National Park, based on 15 observer-days of citizen-science data from GBIF.
When is the best time to see Quiller in Grand Teton National Park?
July has the highest sighting rate for Quiller in Grand Teton National Park in our monthly data.