Definition of "yagouaroundi"

Azara, who describes this animal, states, that there is some uncertainty as to its name; but he believes that this, as well as his yagouaroundi, is known by the name eira.

1821, Edward Griffith, General and Particular Descriptions of the Vertebrated Animals, page 86

I profited, however, by my acquaintance with the Portuguese padre, for on another occasion he gave me a fine specimen of the Yagouaroundi

1839, Charles Darwin, “Part 29 Harvard Classics”, in Voyage of the Beagle, page 38