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flag Pets can transfer human DNA to surfaces, aiding crime investigations.

flag Household pets, especially dogs and cats, can transfer human DNA through brief interactions, acting as silent witnesses in criminal investigations, according to a 2026 study by Flinders University and Victoria Police. flag The research found that pets can carry DNA from non-owners, including suspects, and spread it to surfaces, potentially linking individuals to crime scenes they never touched. flag Controlled experiments confirmed DNA transfer from mock offenders to pets and then to environments, highlighting pets as possible biological vectors. flag The findings suggest pets may offer crucial forensic leads, especially when direct evidence is lacking, urging investigators to consider animals in crime scene analysis.

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