The Dog Headed Men? Indri Lemur | Zoo Quest to Madagascar | BBC Earth

#AttenboroughWeek 21st-27th April. Subscribe to BBC Earth: http://bit.ly/BBCEarthSubFirst transmitted in 1961, a young David Attenborough goes on a search for the strange creatures that inhabit Madagascar. David hopes to attract the attention of the Indri Lemur with a recording of their calls. But where are they in the canopy, and how close can David get to them?