Canadian beaver vs gray wolf

Castor canadensis compared with Canis lupus

Key Differences

• Canadian beaver is Not Evaluated while gray wolf is Critically Endangered.
• Canadian beaver is herbivore while gray wolf is carnivore.
• gray wolf is 1.8x heavier than Canadian beaver.
• Canadian beaver lives longer (15 years vs 13 years).

Taxonomic Classification

Rank	Canadian beaver	gray wolf
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Rodentia (啮齿目)	Carnivora (食肉目)
Family	Castoridae (Beavers)	Canidae (Dogs & Wolves)
Genus	Castor (Beavers)	Canis (Dogs & Wolves)
Species	Castor canadensis	Canis lupus

Evolutionary Relationship

Canadian beaver and gray wolf share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Physical Characteristics

Attribute	Canadian beaver	gray wolf
Diet	Herbivore	Carnivore
Average Lifespan	15 years	13 years
Average Length	1.0 m	1.6 m
Average Weight	25.0 kg	45.0 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).

gray wolf

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Seychelles), Asia (Japan), Europe (5 countries), North America (7 countries), Oceania and the Pacific (Marshall Islands, Vanuatu), and South America (5 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Canadian beaver

北美最大的啮齿动物加拿大河狸体重可达32公斤，是栖息于加拿大和美国北部河流、湖泊和湿地的杰出生态系统工程师。通过伐木和建造可达数百米的水坝形成水塘，为数百种物种提供生境。其巢穴和运河改变了整个流域。曾因毛皮贸易被猎杀至濒临灭绝，但种群已大幅恢复。

gray wolf

灰狼是分布最广的野生犬科动物，分布范围从北美横跨欧亚大陆，栖息于冻原、森林和草原等多种生境。高度社会化的动物，以由占优势的繁殖对领导的家族群体生活。作为关键捕食者，狼调节猎物种群并深刻影响生态系统结构，黄石公园的重引入项目对此有充分证明。曾遭到严重迫害，但目前许多地区的种群正在恢复。

Shared Countries

Both species can be found in 7 countries:

🇦🇷 Argentina 🇧🇪 Belgium 🇨🇱 Chile 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden 🇺🇸 United States