Information on working terriers, dogs, natural history, hunting, and the environment, with occasional political commentary as I see fit. This web log is associated with the Terrierman.com web site.
Friday, August 29, 2014
Operant Conditioning, 1893
Called "The Dog Exterminator," this little device was a rubber ball filled with ammonia and a rubber nozzle fixed to a clip. Squeeze the bottle and the clip at the same time (and with your third hand, steer the car!) and the dog runs off howling. This ad appeared in in The Wheel and Cycling Trade Review, of August 1893, and worked a bit like todays modern pepper spray. Source.