Quiller
Erethizon dorsatus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderRodentia (Rosegadors)
- FamilyErethizontidae (New World Porcupines)
- GenusErethizon
- SpeciesErethizon dorsatus (Quiller)
5–10% of wildlife watchers report a Quiller sighting in Yellowstone National Park, based on 12 days of visitor records from GBIF citizen-science data.
Closest Relatives at Yellowstone National Park
Uinta Ground Squirrel
Urocitellus armatus
Yellow-bellied Marmot
Marmota flaviventris
Golden-mantled Ground Squirrel
Callospermophilus lateralis
American Red Squirrel
Tamiasciurus hudsonicus
Least Chipmunk
Tamias minimus
Yellow-pine Chipmunk
Tamias amoenus
Muskrat
Ondatra zibethicus
American Beaver
Castor canadensis
Uinta Chipmunk
Tamias umbrinus
Northern Pocket Gopher
Thomomys talpoides
Deer Mouse
Peromyscus maniculatus
Bushy-tailed Wood Rat
Neotoma cinerea
📅 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 Yellowstone National Park?
About 5% of wildlife watchers report a Quiller sighting in Yellowstone National Park, based on 12 days of visitor records from GBIF citizen-science data.
When is the best time to see Quiller in Yellowstone National Park?
November has the highest sighting rate for Quiller in Yellowstone National Park in our monthly data.