Cat urine glows under a black light.
Notes on verification
Well-documented phenomenon confirmed by veterinary and pet care sources; commonly used practical application for detecting stains, consistent with known fluorescence properties of urine compounds under UV light. [tier=unverified indep_score=0.3 clusters=2 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Fun Facts and Trivia | Kids Environment Kids Health (seed:health_and_medicine)
- https://www.rspca.org.uk/adviceandwelfare/pets/cats/behaviour/pooingcarpet (corroboration)
- https://www.petmd.com/cat/general-health/why-does-cat-urine-glow-under-black-light (corroboration)