Responsiveness of cats to silver vine, Tatarian honeysuckle, valerian and catnip

This study tested how domestic cats respond to four plant materials known to elicit olfactory-driven reactions: silver vine, Tatarian honeysuckle, valerian root, and catnip. By presenting these materials to a large number of cats and scoring their responses, the authors quantified how many cats reacted to each and documented overlap among responders. A notable finding was that silver vine elicited a response in a high proportion of cats, including many that did not react to catnip, indicating that offering silver vine or the other alternatives can reach cats unresponsive to catnip alone. The work provided practical guidance for enrichment by mapping individual variation in responsiveness across multiple plants. It strengthened the evidence base for using these botanicals to stimulate cats and laid groundwork for later chemical and behavioral studies of the active iridoid compounds responsible for the reactions.