Thirty images of Catnip; Nepeta cataria, Lamiaceae or Labiatae, Mint Family. Catnip, a famous feline euphoric, produces the Catnip Response, including sniffing, licking, chewing and head shaking. Not just limited to house cats, large cats such as lions and tigers also enjoy catnip. It has been linked to a specific gene, absent from about one-third of cats. Catnip tea was long used to treat colds and fevers.