Of the many bewildering behaviors cats display, one of the strangest is their obsession with a specific species of plant. After just one whiff, even the most stoic cat can start pawing, drooling, biting, and wriggling in a state of pure feline euphoria. So, why do cats go crazy for catnip? Jaap de Roode shares the fascinating reason why this herb sends our feline friends into a frenzy. [Directed by Héloïse Dorsan-Rachet, narrated by Alexandra Panzer, music by André Aires].