科學家觀察到於中南美洲的侏食蟻獸，毛髮顏色有差異，懷疑可能有多於一個品種。但樹棲夜行的侏食蟻獸體型細小，難於野外找到，令研究紀錄更加困難。所以經過十多年的努力，才成功透過DNA測試來辨認出六種新的侏食蟻獸。
scientists recognized that there are differences between the colors of silky anteaters in central and south america, and believe there are more than one species of them. as silky anteaters are arboreal and nocturnal, and they are the smallest anteaters with only 35cm body length, to track and find them was a great challenge. after over a decade of hard work, they examined the DNA samples and discovered six new species of silky anteaters!
https://news.nationalgeographic.com/2017/12/anteaters-animals-brazil-new-species/
http://www.sci-news.com/biology/silky-anteaters-seven-species-05524.html
