I thought it was quite funny that the New York Post had to apologise for likening President Obama to a chimpanzee. After all, there is a full web site devoted to comparing George Bush to one. And not an obsure part of the internet either - it has had a million hits a year.
I recall a cartoon in The Press which depicted George Bush as a monkey. Did they apologise? No, but perhaps that is because George Bush's supporters had a sense of humour.