Anyone who has a cat or kitten knows how crazy their feline friend goes for catnip. What is catnip, though, and why does it drive cats crazy? According to PetMD, catnip is a herb closely related to ...

Catnip (Nepeta cataria) is a plant famous for the excitement it creates in cats. The flowering tops are used to make medicine. Catnip contains chemicals that might have a calming effect. It's not ...