Common sowthistle vs Polar bear

Sonchus oleraceus compared with Ursus maritimus

Key Differences

Common sowthistle is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common sowthistle	Polar bear
Kingdom	Plantae (tumbuhan)	Animalia (hewan)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (mamalia)
Order	Asterales (Daisies & Sunflowers)	Carnivora (Carnivorans)
Family	Asteraceae (Daisy Family)	Ursidae (Bears)
Genus	Sonchus	Ursus (Bears)
Species	Sonchus oleraceus	Ursus maritimus

Conservation Status

Common sowthistle

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common sowthistle	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Common sowthistle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (16 countries), Asia (12 countries), Europe (12 countries), North America (10 countries), Oceania and the Pacific (Kiribati, Marshall Islands, Samoa), and South America (5 countries).

Polar bear

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common sowthistle

<em>Sonchus oleraceus</em>, commonly known as the common sowthistle, is a cosmopolitan annual herb in the family Asteraceae, native to Europe and western Asia but now naturalised across nearly every continent. This species typically inhabits disturbed ground, roadsides, agricultural fields, gardens, and waste places, thriving in a wide range of soil types and climatic conditions. It is one of the most widely distributed weedy plants on Earth, with a geographic range spanning temperate and subtropical regions worldwide including North America, South America, Africa, Asia, Australia, and beyond. Classified as Least Concern on the IUCN Red List, <em>Sonchus oleraceus</em> is among the most ecologically successful colonisers of human-modified environments. The plant typically grows to 20–120 cm in height, producing distinctive yellow composite flower heads and lobed, spiny-margined leaves with milky latex sap. It completes its lifecycle rapidly, producing numerous wind-dispersed achenes that facilitate broad dispersal. As a plant, dietary traits are not applicable in the animal sense; it is itself consumed as a food source by livestock, insects, and in some cultures as an edible green for humans. Biological traits such as average lifespan metrics remain poorly documented for this weedy annual, though it typically completes its lifecycle within a single growing season.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.