ScienceJapanese researchers see stronger reaction despite Western herb having more of key compoundCats vastly preferred silver vine in the experiments even though catnip was found to have a higher concentration of the compound that attracts them. (Iwate University)AYAKA FUKUSHIMAMay 22, 2026 00:55 JSTTOKYO -- When cats are given the choice between catnip and the Asian plant silver vine, they overwhelmingly choose the latter, Japanese researchers have found, a finding that could deepen our understanding of the relationship between cat behavior and scent.