Now researchers have unveiled a survival plan that combines tourism with increased conservation efforts.
Writing in Science, the team says the project will cost £4.6m ($7.6m),
There are over 100 species of lemur known to science, the majority of which are at dangerously low levels, largely due to habitat loss from illegal logging.
Madagascar is the only known home of these species as its unique location, split off from the African mainland, has allowed the primates to evolve in near isolation. READ MORE