Male mountain Gorillas, members of the Agashya family, are pictured in the Sabyinyo Mountains of Rwanda on December 27, 2014. Rwanda, well known for mountain gorillas  an endangered species found only in the border areas between Rwanda, Uganda and the Democratic Republic of the Congo  and hosted more than a million visitors between 2006-13, generating from the national parks alone $75m (£44m) in tourism revenue in that time; 85% of this is from trekkers who come to see some of the country's 500 gorillas. AFP PHOTO / Ivan LIEMAN        (Photo credit should read Ivan Lieman/AFP/Getty Images)