In the 19th and 20th centuries , several leopard cat zoological specimens from the Sunda islands were described : Results of a phylogeographical study indicate that the Sunda leopard cat lineage diverged in the Middle Pleistocene . The Borneo population is thought to have expanded to Sumatra and the Philippines island of Palawan after the Toba eruption , when these islands were connected during the late Pleistocene glaciation . Since leopard cats in Palawan and Negros show low genetic differentiation , it is possible that humans introduced the leopard cat from Palawan to Negros and adjacent islands . Based on these results , two Sunda leopard cat subspecies are recognised , namely '' P. j. javanensis '' and '' P. j. sumatranus '' , the latter including the Visayan leopard cat
Toba eruption
Toba catastrophe theory
Sunda leopard cat