Canadian beaver vs Common Sundrops

Castor canadensis compared with Oenothera fruticosa

Taxonomic Classification

Rank	Canadian beaver	Common Sundrops
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Myrtales (Myrtales)
Family	Castoridae (Beavers)	Onagraceae
Genus	Castor (Beavers)	Oenothera
Species	Castor canadensis	Oenothera fruticosa

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Common Sundrops

NE — Not Evaluated

Physical Characteristics

Attribute	Canadian beaver	Common Sundrops
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Common Sundrops

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Czech Republic, Japan, Norway, Sweden, and United States.

Canadian beaver

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.

Common Sundrops

<em>Oenothera fruticosa</em>, the common sundrops, is a perennial flowering plant in the family Onagraceae, order Myrtales. It is native to eastern North America and has been introduced and naturalized in parts of Europe, including Czech Republic, Norway, and Sweden, as well as in Japan. The species typically inhabits open, sunny habitats such as meadows, roadsides, dry slopes, and disturbed areas, preferring well-drained soils. <em>Oenothera fruticosa</em> bears bright yellow, four-petalled flowers that bloom in late spring and early summer, attracting a range of pollinators including bees and butterflies. Unlike many evening primroses in the genus, sundrops are day-blooming. The plant spreads both by seed and by vegetative runners, forming colonies in suitable habitat. Biological traits including average individual lifespan, precise height measurements, and specific herbivore associations remain poorly documented at the species level. <em>Oenothera fruticosa</em> has not been formally assessed by the IUCN, though it is generally considered a locally common species without significant conservation concerns, and its naturalized populations in Europe are typically stable.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States