Neotropical otter vs Red Knot

Lontra longicaudis compared with Calidris canutus

Key Differences

• Neotropical otter is Data Deficient while Red Knot is Least Concern.

Taxonomic Classification

Rank	Neotropical otter	Red Knot
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Charadriiformes (Charadriiformes)
Family	Mustelidae (Weasels & Otters)	Scolopacidae
Genus	Lontra	Calidris
Species	Lontra longicaudis	Calidris canutus

Evolutionary Relationship

Neotropical otter and Red Knot share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Neotropical otter

DD — Data Deficient

Red Knot

LC — Least Concern

Physical Characteristics

Attribute	Neotropical otter	Red Knot
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Neotropical otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Red Knot

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Red Knot

Red Knot (Calidris canutus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela