黑眶蟾蜍 vs Polar bear

Duttaphrynus melanostictus compared with Ursus maritimus

Key Differences

• 黑眶蟾蜍 is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	黑眶蟾蜍	Polar bear
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Amphibia (两栖动物)	Mammalia (哺乳動物)
Order	Anura (无尾目)	Carnivora (食肉目)
Family	Bufonidae	Ursidae (Bears)
Genus	Duttaphrynus	Ursus (Bears)
Species	Duttaphrynus melanostictus	Ursus maritimus

Evolutionary Relationship

黑眶蟾蜍 and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

黑眶蟾蜍

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	黑眶蟾蜍	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

黑眶蟾蜍

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Widely distributed across Africa (Madagascar), Asia (4 countries), and Europe (Spain).

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.

黑眶蟾蜍

<em>Duttaphrynus melanostictus</em>, the common Sunda toad, is an amphibian in the family Bufonidae, order Anura. It has a wide natural distribution across South and Southeast Asia, ranging from Pakistan and India through to southern China, the Malay Peninsula, and the Indonesian archipelago, and has also been introduced to Madagascar. The species typically inhabits a broad range of environments including urban areas, agricultural land, forest edges, gardens, and disturbed habitats, demonstrating remarkable adaptability to human-modified landscapes. <em>Duttaphrynus melanostictus</em> is characterized by prominent parotoid glands behind the eyes that secrete toxic compounds serving as a defense against predators, a feature shared with other true toads. It is an opportunistic carnivore, feeding on a variety of invertebrates including insects, worms, and small arthropods. Biological traits including average lifespan under natural conditions, typical body measurements, and specific breeding parameters remain poorly documented. The species is assessed as Least Concern by the IUCN, reflecting its extensive range and high tolerance for habitat modification, though introduced populations in Madagascar represent a potentially invasive concern.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。