Nepeta cataria, commonly known as catnip, catswort, catwort, and catmint, is a species of the genus Nepeta in the family Lamiaceae, native to southern and eastern Europe, the Middle East, Central Asia, parts of Mongolia, and parts of China. It is widely naturalized in northern Europe, New Zealand, and North America. The common name catmint can...
It's sort of weird that people will give their cats what can effectively be described as psychoactive drugs, but the cats seem to like it and it isn't addictive, so it's alright.