If you're a cat owner, having a small bag of green ... Enter the wondrous world of catnip, and the stoned kitties who can't get enough of it. The name 'catnip' is derived from nepeta cataria ...

Does your cat, an otherwise aloof and graceful creature, go whacky for catnip? Then they are one of the 70 per cent of domestic cats, as well as some big cats like lions, who do. But how has this ...