Bootlace worm vs Lion

Lineus longissimus compared with Panthera leo

Key Differences

• Bootlace worm is Not Evaluated while Lion is Vulnerable.

Taxonomic Classification

Rank	Bootlace worm	Lion
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Nemertea (นีเมอร์เทีย)	Chordata (สัตว์มีแกนสันหลัง)
Class	Pilidiophora (Pilidiophora)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Heteronemertea (Heteronemertea)	Carnivora (สัตว์กินเนื้อ)
Family	Lineidae	Felidae (Cats)
Genus	Lineus	Panthera (Big Cats)
Species	Lineus longissimus	Panthera leo

Evolutionary Relationship

Bootlace worm and Lion share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Bootlace worm

NE — Not Evaluated

Lion

VU — Vulnerable

Population: ~23.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bootlace worm	Lion
Diet	—	Carnivore
Average Lifespan	—	15 years
Average Length	—	2.5 m
Average Weight	—	190.0 kg

Habitat & Geographic Range

Bootlace worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Lion

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 7 distinct biome types spanning the Afrotropic and Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Ecuador, and Kenya. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bootlace worm

The Bootlace worm (Lineus longissimus) is a species in the genus Lineus. Native to Europe, inhabiting ecosystems characteristic of the region.

Lion

The largest wild cat in Africa, lions reach up to 250 kg and are the only social felids, living in prides across sub-Saharan savannas and grasslands. Males are distinguished by their iconic manes. As apex predators, they regulate herbivore populations and maintain ecosystem balance. Listed as Vulnerable due to habitat loss and human-wildlife conflict.