An eastern grey bamboo lemur looks at camera in Andasibe-Mantadia National Park in Madagascar.

After selecting this image for today’s photo of the day, I realized that an awful lot of my recent postings feature an animal staring directly at the camera. Because of this I was going to try and find something else, but then I remembered the particular challenge of photographing eastern grey bamboo lemurs in the wild. It wasn’t easy. These guys are quick. I remember running through the forest with my guide as the eastern greys kept darting from one tree to another. Finally I got this guy to stay still for a second and I was able to get a quick shot. As with all lemurs, the eastern grey bamboo lemurs are prosimians, meaning literally pre-monkeys. Also including tarsiers and bushbabies, prosimians are primates that pre-date the monkeys and apes that flourished in the rest of the world — in the case of lemurs, away from the geographic isolation of Madagascar.