The nepetalactone in catnip makes cats react to this plant in different ways. Some go crazy over catnip, while others just enjoy a peaceful naptime from its effects. It is neither addictive (contrary to folklore) nor harmful to our feline pets.
With its tranquilizing effect (yes, it can actually calm pets), catnip is a safe herbal remedy for our canine friends. You can use it to alleviate nervousness and sleeplessness in many animals.