Pigs can live in the mesquite scrub of South Texas, the swamps of Alabama, or the hills of New Hampshire. Prolific breeders, sows are also excellent mothers. "A sow may give birth to four to six piglets, but eight will survive," says a Texas biologist. Omnivorous, porkers are better at rooting out acorns than deer or turkeys are (after all, pigs are used to find truffles in Europe). They prey on snakes, birds, and the young of domestic and wild animals, and are so efficient in their eating that the remains of a pig kill are often no more than a wisp of hair and a track.