Two older kittens are ignoring their catnip and their new owner wonders why.

The active ingredient in catnip (part of the mint family) is nepetalactone, and even though it does seem to bring on a fairly intense “cat buzz,” it is completely harmless.

Catnip's evolutionary history is key to its powerful effect on felines. In a new study, scientists reveal it underwent two important changes.

Catnip, catmint, catwort, field balm -- it doesn't matter what you call Nepeta cataria. Lions, tigers, panthers, and your common domestic tabby just can't seem to get enough of this fragrant herb ...

What does catnip do to cats? Does it really get your cat high? Here's the lowdown on what catnip is and why it affects your cat.