Natural Predators
Wild boar are a main food source for tigers in the regions where they coexist. Tigers typically follow boar groups, and pick them off one by one. Tigers have been noted to chase boars for longer distances than with other prey, though they will usually avoid tackling mature male boars. In many cases, boars have gored tigers to death in self-defense. In the Amur region, wild boars are one of the two most important prey species for the Siberian Tiger alongside the Manchurian Wapiti, with the two species collectively comprising roughly 80% of the prey selected by these tigers. Studies of Bengal Tigers indicate that boars are usually secondary in preference to various cervids and bovids. Boars are also probably an important component of the diet of Sumatran Tigers, though their specific significance in the tiger's diet there is not known.
Wolves are also major predators of boars in some areas. Wolves mostly feed on piglets, though adults have been recorded to be taken in Italy, the Iberian Peninsula, and Russia. Wolves rarely attack boars head on, preferring to tear at their perineum, causing loss of coordination and massive blood loss. In some areas of the former Soviet Union, a single wolf pack can consume an average of 50–80 wild boars annually. In areas of Italy where the two animals are sympatric, the extent to which boars are preyed upon by wolves has led to them developing more aggressive behaviour toward both wolves and domestic dogs.
Striped hyenas occasionally feed on boars, though it has been suggested that only hyenas from the three larger subspecies present in Northwest Africa, the Middle East, and India can successfully kill them.
Young piglets are important prey for several species, including large snakes, such as the reticulated python, large birds of prey, and various wild felids. In Australia many piglets are killed by dingos. Adults, due to their size, strength, and defensive aggression, are generally avoided as prey. However, they have been taken additionally by mature leopards; large bears (mainly brown bears); and mature crocodiles. All predators of boars are opportunistic and would take piglets given the opportunity. Where introduced outside of their natural range, boars may be at the top of the food chain, but it is possible that can taken by predators similar to those in their native Eurasia.
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