Dinosaurs may have carried lice, scientists say

A study of louse DNA suggests that mammals and birds may have begun to flourish before dinosaurs went extinct 65 million years ago.

http://www.latimes.com/news/science/la-sci-dino-lice-20110410,0,2187910.story

All reptiles get parasites like that, as far as I know, so it's no surprise. Not sure why they went with that for the top headline. The subject is mammals' success coming earlier than thought.