Canadian beaver vs Common Ostrich

Castor canadensis compared with Struthio camelus

Key Differences

• Canadian beaver is Not Evaluated while Common Ostrich is Least Concern.
• Canadian beaver is herbivore while Common Ostrich is omnivore.
• Common Ostrich is 4.0x heavier than Canadian beaver.
• Common Ostrich lives longer (45 years vs 15 years).

Taxonomic Classification

Rank	Canadian beaver	Common Ostrich
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Struthioniformes (Struthioniformes)
Family	Castoridae (Beavers)	Struthionidae
Genus	Castor (Beavers)	Struthio
Species	Castor canadensis	Struthio camelus

Evolutionary Relationship

Canadian beaver and Common Ostrich share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Common Ostrich

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Canadian beaver	Common Ostrich
Diet	Herbivore	Omnivore
Average Lifespan	15 years	45 years
Average Length	1.0 m	2.1 m
Average Weight	25.0 kg	100.0 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 Ostrich

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (4 countries), Europe (5 countries), and South America (Colombia, Ecuador, Peru).

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 Ostrich

The world's largest and heaviest living bird, common ostriches stand up to 2.8 meters tall and weigh 156 kg, inhabiting savannas and semi-arid plains of Africa. Flightless, they compensate with powerful long legs capable of delivering lethal kicks and sustaining running speeds of 70 km/h — the fastest of any bird. Their large eyes are the biggest of any land vertebrate. Ostriches lay the largest eggs of any living bird.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇬🇧 United Kingdom