Question: What Small native cat to North and South America did Carl B. Koford make studies on in the 50's and 70's?

<P0-S0>  He attended the Piedmont High School and studied at the University of Washington. <P0-S1>  Koford began his field work about the California condor in March 1939. <P0-S2>  More than 400 days until June 1941 he spend with the condors. <P0-S3>  During World War II he interrupted his studies to serve in the U.S. Navy. <P0-S4>  In 1946 his observations on the condors continued. <P0-S5> Carl Buckingham Koford (September 3, 1915 in Oakland, California – December 3, 1979 in Berkeley, California) was an American biologist who is known for his research work on the behavior of the California condor. <P0-S6>  In 1953 he published the report "The California Condor" where he gave a first estimation of the world population of about 60 individuals. <P0-S7>  In the 1950s and again in the 1970s he went to South America where he made studies on species like the Vicuña, the Jaguar, the Ocelot or the Jaguarundi. <P0-S8>  After rumours about the survival of some individuals of the thought to be extinct Mexican grizzly bear Koford went to Mexico in 1969 but he failed to rediscover this bear. <SEP> <P1-S0> This is a list of the native wild mammal species recorded in South America. <P1-S1>  South America's terrestrial mammals fall into three distinct groups. <P1-S2>  The marsupials and xenarthrans are 'old-timers', their ancestors having been present on the continent since at least the very early Cenozoic Era. <P1-S3>  During the early Cenozoic, South America's only land connection was to Antarctica, so it was effectively cut off from most of the world; as the fragments of Gondwana continued to separate, this connection was lost, leaving South America an island continent. <P1-S4>  Caviomorph rodents and monkeys arrived as 'waif dispersers' by rafting across the Atlantic from Africa in the Eocene epoch, 35 million or more years ago. <P1-S5>  All the remaining nonflying mammals of South America are recent arrivals, having migrated from North America via Central America during the past seven million years as part of the Great American Interchange; this invasion, which peaked around three million years ago, was made possible when the formation of the volcanic Isthmus of Panama bridged North and South America. <P1-S6>  The newcomers out-competed and drove to extinction many unique mammals that had evolved during South America's long period of isolation, as well as some species from other classes (e.g., terror birds). <SEP> <P2-S0> The jaguarundi ("Puma yagouaroundi") ( ) or eyra cat is a small wild cat native to southern North America and South America. <P2-S1>  It has been listed as Least Concern on the IUCN Red List since 2002. <P2-S2>  Its presence in Uruguay is uncertain. <P2-S3>  The megareserves of the Amazon Basin are probably the only conservation units that can sustain long-term viable populations. <SEP> <P3-S0> The Pantanal cat ("Leopardus colocola braccatus") is a Pampas cat subspecies, a small wild cat native to South America. <P3-S1>  It is named after the Pantanal wetlands in central South America, where it inhabits mainly grassland, shrubland, savannas and deciduous forests.