What is catnip
Last updated: April 1, 2026
Key Facts
- Catnip contains nepetalactone, the chemical compound responsible for the psychoactive effects in cats
- Approximately 70-80% of cats are sensitive to catnip; sensitivity is determined by genetics
- The effects typically last 5-15 minutes before cats become temporarily immune to the herb
- Catnip is completely non-toxic and harmless to cats of all ages, including kittens and elderly cats
- The plant has been used for centuries, with documented use dating back to ancient Egypt and medieval Europe
What is Catnip?
Catnip, scientifically known as Nepeta cataria, is a perennial herbaceous plant belonging to the mint family (Lamiaceae). It is native to southern and eastern Europe, the Middle East, and central Asia, though it now grows wild throughout North America and Europe. The plant typically reaches heights of 50-100 centimeters and features heart-shaped leaves with a grayish-green color and small purple or white flowers.
How Catnip Affects Cats
The magic of catnip lies in a volatile oil called nepetalactone. When cats encounter catnip, they inhale this compound, which binds to receptors in their nasal tissue and sends signals to the brain's olfactory center. This triggers a behavioral response similar to a feline mating pheromone, causing cats to exhibit playful, hyperactive, or sometimes sedated behavior. The response is temporary and non-addictive.
Sensitivity and Genetics
Interestingly, not all cats respond to catnip. Approximately 70-80% of cats exhibit the characteristic catnip response, while the remaining cats show no reaction whatsoever. This sensitivity is determined entirely by genetics. Kittens under 2-3 months old often don't respond to catnip, and some senior cats may lose sensitivity as they age. The trait is inherited as an autosomal dominant gene.
Effects and Duration
When cats are exposed to catnip, they may roll around, rub their faces against the herb, pounce, or become hyperactive. Some cats become very mellow and relaxed instead. These effects typically last between 5 and 15 minutes. After this period, cats become temporarily immune to catnip's effects—a state called olfactory adaptation—which lasts 30 minutes to 2 hours before sensitivity returns.
Uses and Safety
Catnip is widely used in cat toys, treats, and enrichment products. Cat owners often use it to encourage play, exercise, and mental stimulation. The herb is completely safe for cats and has no known toxic effects, even with prolonged exposure. However, excessive use may reduce the cat's sensitivity over time, so moderation is recommended for maximum effectiveness.
Related Questions
Can kittens have catnip?
Kittens under 2-3 months old typically don't respond to catnip because their sensory receptors haven't fully developed. Most kittens become responsive to catnip between 3 and 6 months of age. Once they do respond, catnip is completely safe for young cats.
What are alternatives to catnip?
Silvervine, valerian root, and Japanese catnip (matatabi) produce similar effects in cats and can be used as alternatives. Some cats that don't respond to traditional catnip may respond to these alternatives. Honeysuckle wood is another natural option that many cats enjoy.
How often should I give my cat catnip?
Most experts recommend offering catnip 2-3 times per week to maintain your cat's sensitivity and prevent habituation. Offering it too frequently may reduce its effectiveness. Rotating between catnip and other enrichment toys helps keep your cat interested and responsive.
Sources
- Wikipedia - Catnip CC-BY-SA-4.0
- ASPCA - Catnip Safety and Use Proprietary