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62
Mostly True Madagascar

The text describes the fossa as Madagascar's top predator, the only animal that hunts lemurs, capable of moving swiftly through trees, and having a cathemeral activity pattern.

Infact verdict: Mostly True (62/100).

The claims about the fossa being Madagascar's top predator and its cathemeral behavior are well-supported by multiple sources. However, the claim that the fossa is the only animal that hunts lemurs is misleading, as other predators also hunt lemurs. The fossa's ability to move swiftly through trees is a well-documented characteristic.

July 08, 2026 Language: en 4 claims analyzed

Individual Claims

93
True Environment
The fossa is Madagascar's top predator.
Multiple sources, including One Earth and San Diego Zoo, confirm that the fossa is Madagascar's top predator and plays a crucial role in regulating lemur populations.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 50
Source Quality Score 90
Source Quality Weight 25
Llm Reasoning Score 85
Llm Reasoning Weight 25
Weighted Total 93
Evidence Summary Multiple sources confirm the fossa as Madagascar's top predator.
45
Mixed Environment
The fossa is the only animal that hunts Madagascar's lemurs.
While the fossa is a primary predator of lemurs, it is not the only animal that hunts them. Other predators also exist in Madagascar.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 40
Web Consensus Weight 50
Source Quality Score 50
Source Quality Weight 25
Llm Reasoning Score 45
Llm Reasoning Weight 25
Weighted Total 45
Evidence Summary Fossa is a primary predator of lemurs, but not the only one.
22
Mostly False Environment
The fossa can move swiftly through the trees.
This is a well-documented characteristic of the fossa, supported by sources like National Geographic.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score None
Web Consensus Weight 50
Source Quality Score None
Source Quality Weight 25
Llm Reasoning Score 50
Llm Reasoning Weight 25
Weighted Total 22
Evidence Summary None
88
True Environment
The fossa is cathemeral, waking and sleeping whenever it feels like it.
The fossa is described as cathemeral, meaning it is active both day and night, supported by sources like Wikipedia and Racine Zoo.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 80
Web Consensus Weight 50
Source Quality Score 75
Source Quality Weight 25
Llm Reasoning Score 80
Llm Reasoning Weight 25
Weighted Total 88
Evidence Summary Sources confirm the fossa's cathemeral behavior.

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