Canadian beaver vs Epaulard

Castor canadensis compared with Orcinus orca

Key Differences

• Canadian beaver is Not Evaluated while Epaulard is Data Deficient.
• Canadian beaver is herbivore while Epaulard is carnivore.
• Epaulard is 216.0x heavier than Canadian beaver.
• Epaulard lives longer (50 years vs 15 years).

Taxonomic Classification

Rank	Canadian beaver	Epaulard
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rodentia (อันดับสัตว์ฟันแทะ)	Cetacea (Whales & Dolphins)
Family	Castoridae (Beavers)	Delphinidae (Oceanic Dolphins)
Genus	Castor (Beavers)	Orcinus (Orcas)
Species	Castor canadensis	Orcinus orca

Evolutionary Relationship

Canadian beaver and Epaulard share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Epaulard

DD — Data Deficient

Population: ~50.0K

Trend: Unknown ?

Physical Characteristics

Attribute	Canadian beaver	Epaulard
Diet	Herbivore	Carnivore
Average Lifespan	15 years	50 years
Average Length	1.0 m	8.0 m
Average Weight	25.0 kg	5.4 t

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).

Epaulard

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador, Venezuela).

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.

Epaulard

The largest member of the dolphin family, orcas reach up to 9 meters and 6 tonnes and are found in every ocean from Arctic to Antarctic. Apex predators living in matrilineal pods with distinct dialects, hunting strategies, and cultural traditions that differ between populations. Some populations specialize in fish, others in marine mammals. No natural predators; orcas sit at the top of every marine food chain they inhabit.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden