Did you know that you can ....

- train cockroaches to salivate in response to an odour stimulus?

- train honeybees to give a stinging response by associating an odour with an electric shock?!

http://www.plosone.org/article/info%...l.pone.0000529

http://www.plosone.org/article/info%...l.pone.0000288

Sadly, the first of these studies was in a place that has been seriously disrupted recently.