A week or so ago, watched National Geographic channel's Explorer program, this one about Hogzilla, previously thought to be a fraud, or more politely, an urban myth.
Guy in Georgia shoots wild hog, claims it was 12-ft. and 1000 lbs. Said buried it after killing, but not before taking pictures. Most thought it was doctored photo.
NatlGeo devoted this program to it; dug it up; measured, weighed; performed DNA tests. Upshot: Hogzilla was the real deal, though not as large as claimed (allowed as how maybe the photo was slightly Photoshop'd), it was estimated to have been ~8-ft. and 800-lbs. Abnormally large by any wild hog-standard.
Program pointed out, pigs are smartest domestic animal, and they're mean. When they escape into the wild, they are unique among domesticated animals – in a matter of weeks, they start to physically change, e.g. hair gets longer and coarser, and their disposition changes.
Here's NatlGeo's
blog on the show.