Canadian beaver vs Emerald Spreadwing

Castor canadensis compared with Lestes dryas

Key Differences

• Canadian beaver is Not Evaluated while Emerald Spreadwing is Vulnerable.

Taxonomic Classification

Rank	Canadian beaver	Emerald Spreadwing
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Arthropoda (节肢动物门)
Class	Mammalia (哺乳動物)	Insecta (昆蟲綱)
Order	Rodentia (啮齿目)	Odonata (蜻蜓目)
Family	Castoridae (Beavers)	Lestidae
Genus	Castor (Beavers)	Lestes
Species	Castor canadensis	Lestes dryas

Evolutionary Relationship

Canadian beaver and Emerald Spreadwing share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Emerald Spreadwing

VU — Vulnerable

Physical Characteristics

Attribute	Canadian beaver	Emerald Spreadwing
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).

Emerald Spreadwing

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Vulnerable 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。

Emerald Spreadwing

翠色珍蟌（Lestes dryas）在IUCN红色名录中被列为易危（VU）。该物种在野外面临较高的濒危风险，种群持续下降，栖息地压力不断加剧。

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States