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plural catamounts
(US) A wild animal of the family Felidae, especially the cougar or puma (Puma concolor). quotations examples
Uncle Charley's voice was very soft and there was a weary note in it. "Great snarlin' catamounts, but I'm tired."
1920, Peter B[ernhard] Kyne, chapter VIII, in The Understanding Heart, Toronto, Ont.: The Copp Clark Co., pages 144–145
(obsolete) Synonym of catamountain (“a leopard, a panther (Panthera pardus)”).