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PEE APPEAL
Early research found that T. gondii–infected rats spent more time around cat urine (but not other urine) than noninfected rats. Ongoing work suggests that the parasite makes the typically fear-inducing scent appealing. Credit: M. Berdoy, J.P. Webster, D.W. Macdonald/Proc. R. Soc. Lond. B 2000

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