Bamboo bear vs brown-throated three-toed sloth

Ailuropoda melanoleuca compared with Bradypus variegatus

Key Differences

• Bamboo bear is Vulnerable while brown-throated three-toed sloth is Least Concern.
• Bamboo bear is 25.0x heavier than brown-throated three-toed sloth.
• brown-throated three-toed sloth lives longer (30 years vs 20 years).

Taxonomic Classification

Rank	Bamboo bear	brown-throated three-toed sloth
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Carnivora (ネコ目)	Pilosa (有毛目)
Family	Ursidae (Bears)	Bradypodidae (Three-toed Sloths)
Genus	Ailuropoda (Giant Pandas)	Bradypus (Three-toed Sloths)
Species	Ailuropoda melanoleuca	Bradypus variegatus

Evolutionary Relationship

Bamboo bear and brown-throated three-toed sloth share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Bamboo bear

VU — Vulnerable

Population: ~1.9K

Trend: Increasing ↑

brown-throated three-toed sloth

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Bamboo bear	brown-throated three-toed sloth
Diet	Herbivore	Herbivore
Average Lifespan	20 years	30 years
Average Length	1.5 m	60 cm
Average Weight	100.0 kg	4.0 kg

Habitat & Geographic Range

Bamboo bear

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and temperate broadleaf and mixed forests, among 7 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

brown-throated three-toed sloth

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Bamboo bear

ジャイアントパンダ（Ailuropoda melanoleuca）は中国中部の山岳竹林に生息し、体重最大125キログラムになるクマ科の動物で、食肉目に分類されながら食事の99%を竹が占める特異な食性を持つ。偽の親指（橈側種子骨）を使って竹の茎を把握し、1日14時間もの採食時間を費やす。2016年にIUCNレッドリストで絶滅危惧から危急（VU）へ改善されており、保護繁殖プログラムと自然保護区の設置が個体数回復に貢献している。

brown-throated three-toed sloth

ノドブトウミオサミオは世界で最も動きの遅い哺乳類のひとつで、中南米の熱帯雨林の樹冠に逆さまにぶら下がり、平均時速0.24kmで移動します。低い代謝率は、栄養価の乏しい葉を主食とする適応です。毛皮に生育する藻類がカモフラージュとなり、抗菌性をもつ共生菌を宿すこともあります。蛾、甲虫、菌類がナマケモノの毛皮の中に小さな生態系を形成しています。