Cat crazy for valerian and catnip
kitty cat rubbing the face against a toy with the smell of valerian and catnip
... just crazy for it...
You find her rolling and twisting on the floor, rubbing her face against the valerian toy and drooling everywhere.
Usually these sessions last about 10 minutes, after which the cat loses interest.
(read more: http://www.humanesociety.org/animals)