Cougar
Naming and etymology

The word cougar is borrowed from the Portuguese çuçuarana, via French; it was originally derived from the Tupi language. A current form in Brazil is suçuarana. In the 17th century, Georg Marcgrave named it cuguacu ara. Marcgrave's rendering was reproduced in 1648 by his associate Willem Piso. Cuguacu ara was then adopted by John Ray in 1693. In 1774, Georges-Louis Leclerc, Comte de Buffon converted cuguacu ara to cuguar, which was later modified to "cougar" in English.

The cougar holds the Guinness record for the animal with the greatest number of names, with over 40 in English alone. "Puma" is the common name used in Latin America and most parts of Europe. The term puma is also sometimes used in the United States. The first use of puma in English dates to 1777, introduced from Spanish from the Quechua language. In the western United States and Canada, it is also called "mountain lion", a name first used in writing in 1858. Other names include "panther" (although it does not belong to the genus Panthera) and "catamount" (meaning "cat of the mountains").
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