| Kingdom: Animalia |
| Phylum: Chordata |
| Class: Mammalia |
| Subclass: Theria |
| Order: Rodentia |
| Suborder: Hystricognatha |
| Infraorder: Hystricognathi |
| Family: Erethizontidae |
| Genus: Erethizon |
| Subject: Erethizon dorsatum Linnaeus |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Dilleniidae |
| Order: Salicales |
| Family: Salicaceae |
| Genus: Populus |
| Subject: Populus spp. L. |