Experientia. 1979 Feb; 35(2): 237-8.

The effect of an ethanol extract of catnip (Nepeta cataria) on the behavior of the young chick.

Sherry CJ, Hunter PS.

The alcohol extract of catnip has a biphasic effect on the behavior of young chicks. Low and moderate dose levels (25--1800 mg/kg) cause increasing numbers of chicks to sleep, while high dose levels (i.e. above 2 g/kg) cause a decreasing number of chicks to sleep.