kinkajou vs potto

kinkajou

noun
  • Potos flavus, a carnivorous mammal of Central America and South America with a long, prehensile tail, related to the raccoon. 

potto

noun
  • A small primate, Perodicticus potto, native to the tropical rainforests of Africa. 

How often have the words kinkajou and potto occurred in a corpus of books? (source: Google Ngram Viewer )