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the claim
Certain animal species possess eyes capable of sensing infrared light
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
3 sources for · 0 against

Multiple scientific studies confirm that certain animal species, including specific fish and ticks, possess specialized physiological mechanisms capable of sensing infrared light.

Evidence for · 3
Sensitivity differences in fish offer near-infrared vision as an adaptable evolutionary trait.
2013 · cited by 28
Paper 5 demonstrates that various fish species possess near-infrared (NIR) vision with spectral sensitivity thresholds exceeding 930 nm, correlating with environmental NIR availability.
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The analysis

The claim is specific, empirical, and testable. Retrieved papers 5, 7, and 10 provide direct empirical evidence that certain animals (such as fish, ticks, and snakes) possess specialized organs or visual sensitivities enabling the detection of infrared light. No papers refute the claim.

More for · 2
Infrared light detection by the haller's organ of adult american dog ticks, Dermacentor variabilis (Ixodida: Ixodidae).
2017 · cited by 24
Paper 7 provides evidence that adult American dog ticks can detect infrared light using their Haller's organs.
Uncooled self-powered hemispherical biomimetic pit organ for mid- to long-infrared imaging.
2022 · cited by 10
Paper 10 discusses the exceptional infrared perception found in certain animal species, specifically noting snakes and their pit organs.
Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. Virus Detection: From State-of-the-Art Laboratories to Smartphone-Based Point-of-Care Testing.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Adaptive Thermogenesis in Mice Is Enhanced by Opsin 3-Dependent Adipocyte Light Sensing.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Cell-Penetrating Peptides Derived from Animal Venoms and Toxins.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Pinopsin evolved as the ancestral dim-light visual opsin in vertebrates.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. TRP channels: a missing bond in the entrainment mechanism of peripheral clocks throughout evolution.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Sensitivity differences in fish offer near-infrared vision as an adaptable evolutionary trait.peer-reviewedsupports
  7. Dairy Cow Mastitis Detection by Thermal Infrared Images Based on CLE-UNetpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Infrared light detection by the haller's organ of adult american dog ticks, Dermacentor variabilis (Ixodida: Ixodidae).peer-reviewedsupports
  9. Evolution of Sensory Receptors.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Optogenetic induction of hibernation-like state with modified human Opsin4 in mice.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Uncooled self-powered hemispherical biomimetic pit organ for mid- to long-infrared imaging.peer-reviewedsupports
  12. Adaptation of pineal expressed teleost exo-rod opsin to non-image forming photoreception through enhanced Meta II decay.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked06 Aug 2026
judged → SUPPORTED · 8406 Aug 2026
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