Giant Otter vs Nile Crocodile

Pteronura brasiliensis compared with Crocodylus niloticus

Key Differences

• Giant Otter is Endangered while Nile Crocodile is Least Concern.

Taxonomic Classification

Rank	Giant Otter	Nile Crocodile
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Reptilia (Reptiles)
Order	Carnivora (Carnivorans)	Crocodylia (Crocodilians)
Family	Mustelidae (Weasels & Otters)	Crocodylidae (Crocodiles)
Genus	Pteronura	Crocodylus (True Crocodiles)
Species	Pteronura brasiliensis	Crocodylus niloticus

Evolutionary Relationship

Giant Otter and Nile Crocodile share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Giant Otter

EN — Endangered

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Giant Otter	Nile Crocodile
Diet	—	Carnivore
Average Lifespan	—	70 years
Average Length	—	5.0 m
Average Weight	—	750.0 kg

Habitat & Geographic Range

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Egypt, Kenya, Madagascar, South Africa, and Tanzania.

Nile Crocodile

The Nile crocodile is one of the largest reptiles in the world and is found throughout sub-Saharan Africa.