According to the IUCN Red List, "S. verrucosus" was first declared vulnerable in 1988 and listed as endangered in 1996. A drastic 53% drop in the population occurred from 1982 through 2006. The species is believed to be still declining. A recent study estimated a population of 172-377 individuals, making the Javan warty pig one of the rarest pig species. The main threat to this species is habitat encroachment by humans. Agriculture is a large influence in the decline of the Javan warty pig. These pigs are also killed by farmers who spot the pigs raiding their crops at night. Since this is a large animal, sports hunters also consider killing the animal a challenge and see it as a trophy.