An indelicate question, not for the squeamish...?

In doing research for an article on human sexual oddities I've run into a brick wall of sorts...all the sites I've Googled for videos of inter-special contact (wink-wink) are loaded with viruses and trojan horses (no pun intended) and such...are there any safe sites (preferably free, I don't think my publisher would go for covering a membership charge like this) ? All answers will be held discretely, of course.