The urine-catnip common bond

To the human nose, catnip has only a faint smell, but obviously cats respond to it in a flamboyant way. Curiously, cats can also get a high by sniffing a concentrated extract of tomcat urine, which humans respond to in quite a different way.

It appears that the chemical compound nepetalactone, which is the pleasure-inducing ingredient in catnip, is similar to something found in tomcat urine. (Here’s a hint: If you want to please your cat—and yourself—stick with catnip and avoid the urine extract.)