Guépard vs Squalelet féroce

Acinonyx jubatus compared with Isistius brasiliensis

Key Differences

• Guépard is Vulnerable while Squalelet féroce is Least Concern.

Taxonomic Classification

Rank	Guépard	Squalelet féroce
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (mammifères)	Elasmobranchii
Order	Carnivora (carnivores)	Squaliformes (Squaliformes)
Family	Felidae (Cats)	Dalatiidae
Genus	Acinonyx (Cheetahs)	Isistius
Species	Acinonyx jubatus	Isistius brasiliensis

Evolutionary Relationship

Guépard and Squalelet féroce share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Guépard

VU — Vulnerable

Population: ~6.7K

Trend: Decreasing ↓

Squalelet féroce

LC — Least Concern

Physical Characteristics

Attribute	Guépard	Squalelet féroce
Diet	Carnivore	—
Average Lifespan	12 years	—
Average Length	1.5 m	—
Average Weight	50.0 kg	—

Habitat & Geographic Range

Guépard

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

Range

Distributed across Botswana, Iran, Kenya, Namibia, and Tanzania. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Squalelet féroce

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Chile, Norway, and Taiwan.

Guépard

The fastest land animal on Earth, reaching speeds of 112 km/h over short distances across African and Iranian grasslands. Slender build with a deep chest, long legs, and distinctive black tear-stripe markings. Unlike other big cats, cheetahs vocalize with chirps and purrs. Vulnerable, with only ~7,000 remaining due to habitat fragmentation and competition with larger predators.

Squalelet féroce

The cigar shark, also known as the cookiecutter shark (Isistius brasiliensis), is a small but remarkable shark in the family Dalatiidae, found throughout warm oceanic waters worldwide in tropical and subtropical latitudes. Reaching only 40–50 centimeters in length, it possesses oversized jaws with large, triangular lower teeth arranged in a saw-like series that cut distinctive circular plugs of flesh from much larger prey—including tuna, dolphins, whales, billfish, and even submarine cables and human bodies. It does not kill its prey but instead latches on, rotates its body, and excises a characteristic cookie-cutter-shaped bite. The cigar shark is bioluminescent, emitting a green glow from photophores on its ventral surface that may serve as counter-illumination or to attract prey from below. It undertakes diel vertical migrations, ascending to shallower waters at night and descending to mesopelagic depths during the day. The species is classified as Least Concern by the IUCN, with a vast oceanic distribution and no targeted commercial fishery. It is occasionally taken as bycatch. The geographic epithet brasiliensis refers to Brazil, where early specimens were described, but the species' range is circumglobal in warm oceans. The cookiecutter shark's feeding strategy is one of the most unusual among elasmobranchs.