The Feral Pig (Sus scrofa)

Sep 20, 2020 Interesting Creatures in Guyana, News

The feral pig (from Latin fera, “a wild beast”) is a pig (Sus scrofa) living in the wild, but which has descended from escaped domesticated swine in both the Old and New Worlds. Razorback and wild hog are American colloquialisms, loosely applied to any type of feral domestic pig, wild boar, or hybrid in North America; pure wild boars are sometimes called “Russian boar” or “Russian razorbacks”. The term “razorback” has also appeared in Australia, to describe feral pigs there.
A feral pig is a domestic pig that has escaped or been released into the wild, and is living more or less as a wild animal, or one that is descended from such animals. Zoologists generally exclude from the feral category animals that, although captive, were genuinely wild before they escaped. Accordingly, Eurasian wild boar, released or escaped into habitats where they are not native, such as in North America, are not generally considered feral, although they may interbreed with feral pigs. Likewise, reintroduced wild boars in Western Europe are also not considered feral, despite the fact that they were raised in captivity prior to their release.
Feral pigs can be extremely dangerous to people, particularly when the pigs travel in herds with their young, and should be avoided when possible. Feral pigs living in the United States have been known to attack without provocation and fatally injure human beings. There have been over 100 documented attacks by feral pigs on human beings in the United States between the years 1825 and 2012. Of these attacks, five have been fatal. Three of the five fatal attacks were by feral pigs wounded by hunters. Both male and female feral pigs are known to attack without provocation, and attacks by solitary males, as well as group attacks have been documented.
On November 26, 2019, a 59 year old Texas woman named Christine Rollins was attacked and killed only a few feet away from the front door of her workplace by a herd of feral pigs in the town of Anahuac, Texas, which is 50 miles east of Houston. This incident was the fifth documented fatal feral pig attack in the United States since 1825. Chambers County Sheriff Brian Hawthorne in a formal statement to news media stated that “multiple hogs” assaulted Rollins during pre-dawn hours between 6 and 6:30 a.m. when it was still dark outside. The victim died of blood loss as a result of her injuries.
In South America, during the early 20th century, free-ranging boars were introduced in Uruguay for hunting purposes and eventually crossed the border into Brazil in the 1990s, quickly becoming an invasive species. Licensed private hunting of both feral boars and their hybrids with domestic pigs was authorized from August 2005 on in the southern Brazilian state of Rio Grande do Sul, although their presence as a pest had been already noticed by the press as early as 1994. Releases and escapes from unlicensed farms (established because of increased demand for boar meat as an alternative to pork), however, continued to bolster feral populations, and by mid-2008, licensed hunts had to be expanded to the states of Santa Catarina and São Paulo.
Recently established Brazilian boar populations are not to be confused with long-established populations of feral domestic pigs, which have existed mainly in the Pantanal for more than 100 years, along with native peccaries. The demographic dynamics of the interaction between feral pig populations and those of the two native species of peccaries (collared peccary and white-lipped peccary) is obscure and is still being studied.

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