Affenschande

Noted, over lunch, in a post at Blood & Treasure about Rudolf Herzog's recent book on humour in Nazi Germany:

Nazi actions are, at times, the funniest things in the book. For instance, when a circus performer taught his apes to give the Hitler salute, a law was passed forbidding apes from doing so on pain of death.

This rang a bell, as the other day I was reading about another group of apes who, in certain circumstances, seem compelled -- as if by an irresistable force -- to give such salutes.