Canadian beaver vs common bottlenose dolphin

Castor canadensis compared with Tursiops truncatus

Key Differences

• Canadian beaver is Not Evaluated while common bottlenose dolphin is Least Concern.
• Canadian beaver is herbivore while common bottlenose dolphin is carnivore.
• common bottlenose dolphin is 12.0x heavier than Canadian beaver.
• common bottlenose dolphin lives longer (45 years vs 15 years).

Taxonomic Classification

Rank	Canadian beaver	common bottlenose dolphin
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Rodentia (Bộ Gặm nhấm)	Cetacea (Whales & Dolphins)
Family	Castoridae (Beavers)	Delphinidae (Oceanic Dolphins)
Genus	Castor (Beavers)	Tursiops (Bottlenose Dolphins)
Species	Castor canadensis	Tursiops truncatus

Evolutionary Relationship

Canadian beaver and common bottlenose dolphin share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Canadian beaver	common bottlenose dolphin
Diet	Herbivore	Carnivore
Average Lifespan	15 years	45 years
Average Length	1.0 m	3.0 m
Average Weight	25.0 kg	300.0 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 bottlenose dolphin

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 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 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.

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇦 Ukraine