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Silver vine (also called matatabi) has long been known to elicit euphoric response in cats. It is the most popular cat treat in Asia, thus sometimes cited in manga as matatabi. The reaction to silver vine is similar to the catnip response, but appears to be more intense. Typical behaviors include rolling, chin and cheek rubbing, drooling, and licking. The effect usually lasts between five and 30 minutes, and cats will usually visit silver vine again after about 20–30 minutes.