This is a South American Mountain Lion (Puma concolor concolor), not just a Mountain Lion.
Puma stalking two hares in Torres del Paine National Park, Patagonia, Chile.
These were the first Jaguars we encountered on our first boat ride on the Cuiaba River hoping to see these animals. This pair was loafing on a hot afternoon along a sand bank of the river. The pair mated several times. Later the female came to the edge of the river to drink.
Cuiaba River,
near Porto Jofre,
Pantanal,
Brazil
12 August 2017
Observation and photo by Robert Martinez, sent to nature@nhm.org