441 species discovered in Amazon since 2010 October 25, 2013 -- Updated 2037 GMT (0437 HKT) New amazon species (CNN) -- A titi monkey that purrs like a cat is just one of hundreds of species discovered in the Amazon in recent years, according to the World Wildlife Fund. The organization compiled a list of the 441 new species as scientists were about to describe 258 plants, 84 fish, 58 amphibians, 22 reptiles, 18 birds, and one mammal found between 2010 and 2013. See the WWF's list of all 441 new species The Amazon spans eight countries, according to the WWF, and plays host to millions of species -- roughly 1 in 10 found on Earth.