No, Sir David Attenborough probably didn't say that "I am unaware of any animal that is as cruel as Israelis". That was initially posted in an Iranian newspaper as a comment by a "David Attenborough" to an article on Israel and not as a direct quote from Sir David.

#Snopes #Misattributions #Quotations #DavidAttenborough #SirDavidAttenborough

https://www.snopes.com/fact-check/david-attenborough-israelis/