Rolling on the floor, rubbing her face into a toy, suddenly sprinting across the room for no apparent reason; if you've seen this, there's a good chance catnip was involved.
But what's actually going on inside your cat's body?
Believe it or not, her reaction to catnip is hardwired into her biology. Once you understand why it happens, it becomes a genuinely useful tool for keeping your feline companion happy and active.
It all comes down to one compound
Catnip (Nepeta cataria) is a plant from the mint family. On its own, it has no nutritional value for cats, but what makes it special is a single compound it contains: nepetalactone.
When your cat sniffs catnip, nepetalactone binds to receptors in her nasal tissue, receptors directly connected to the parts of the brain that control behaviour and emotion. The effect is immediate, automatic, and completely out of her control. She's not choosing to act silly; her brain is simply doing what it's built to do.
Not every cat reacts and that's perfectly normal
If your cat walks past a catnip toy without a second glance, there is nothing wrong with her. Sensitivity to nepetalactone is determined by genetics, and some cats simply don't have the right receptors to respond. Kittens tend not to react either, as the sensitivity usually develops with age. Roughly 50–70% of adult cats show a clear response; for the rest, there's a very good alternative.
Valerian (Valeriana officinalis) works through a different active compound, actinidine, but targets the same sensory system. Many cats that show zero interest in catnip will respond enthusiastically to valerian. The reaction can be just as strong, sometimes even more intense. If catnip hasn't worked for your cat, valerian is well worth trying.
Why this actually matters for indoor cats
Indoor cats still carry the instincts of hunters, and they're wired to stalk, pounce, explore, investigate. When those drives don't have an outlet, they don't disappear, but they tend to surface as restlessness, low activity, or behaviors that frustrate owners.
Catnip and valerian don't create artificial excitement; they tap into instincts that are already there. Used well, they make toys more engaging, encourage movement, and give your cat a reason actually to interact with her environment.
How to get the most out of it
The amount you use matters less than how you use it. Keep it occasional, because constant access dulls the effect quickly, and your cat will simply stop responding.
Use it with purpose: add it to toys, scratching posts, or new objects you want her to explore.
And if catnip does nothing for your cat, try valerian before giving up; the two work differently, and cats often respond to one but not the other.
A final thought
Catnip isn't essential, but in an environment where stimulation is limited, it earns its place. Not because it entertains your cat, but because it activates behaviors that are already part of who she is. And a cat whose instincts have an outlet is usually a calmer, happier, more balanced one.
