common Atlantic octopus vs Scarlet Macaw

Octopus vulgaris compared with Ara macao

Key Differences

• common Atlantic octopus is Not Evaluated while Scarlet Macaw is Least Concern.
• common Atlantic octopus is carnivore while Scarlet Macaw is herbivore.
• common Atlantic octopus is 5.0x heavier than Scarlet Macaw.
• Scarlet Macaw lives longer (50 years vs 2 years).

Taxonomic Classification

Rank	common Atlantic octopus	Scarlet Macaw
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Cephalopoda (Cephalopods)	Aves (Birds)
Order	Octopoda (Octopuses)	Psittaciformes (Parrots)
Family	Octopodidae (Common Octopuses)	Psittacidae (True Parrots)
Genus	Octopus (Octopuses)	Ara (Macaws)
Species	Octopus vulgaris	Ara macao

Evolutionary Relationship

common Atlantic octopus and Scarlet Macaw share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common Atlantic octopus

NE — Not Evaluated

Trend: Stable →

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	common Atlantic octopus	Scarlet Macaw
Diet	Carnivore	Herbivore
Average Lifespan	2 years	50 years
Average Length	60 cm	85 cm
Average Weight	5.0 kg	1.0 kg

Habitat & Geographic Range

common Atlantic octopus

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Chile, Denmark, Norway, Portugal, and Sweden.

Scarlet Macaw

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found across Europe (5 countries) and South America (Colombia, Ecuador, Venezuela). Population trends indicate a declining trajectory in parts of its range.

common Atlantic octopus

One of the most studied invertebrates in neuroscience and behavioral biology, common octopuses inhabit rocky reefs and seafloors in tropical and temperate coastal waters globally. Highly intelligent with distributed nervous systems — two-thirds of their 500 million neurons reside in their arms — they demonstrate tool use, problem-solving, and individual personalities. Masters of camouflage, they change skin color and texture in milliseconds. They have three hearts, blue copper-based blood, and extremely short lifespans of 1–2 years.

Scarlet Macaw

One of the most brilliantly colored birds in the Americas, scarlet macaws display vivid red, yellow, and blue plumage with wingspans reaching 1 meter. Found in humid lowland forests from Mexico to Bolivia, they are highly intelligent, long-lived — up to 75 years — and form lifelong pair bonds. They travel long distances to clay licks where they consume mineral-rich soil to detoxify seeds. Listed as Least Concern but locally threatened by habitat loss and the pet trade.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway