pregnant pig 2 fathers??

Question
Can a sal pig get pregnant by 2 differt males. I have pure pot belly male and female. She deliverd 9 piglets and one has brown strips. We have had several litters and have never had this. Most of them look like pot belly but we do live way out west and maybe a wild hog came in to visit.

Answer
Striped pot-bellied pig babies are rare, but they do occur. The stripes will fade with age, just as they do in the other breeds that have striped or spotted babies.
One of these breeds is Juliani pigs, which closely resemble pot-bellied pigs, and are named after the person who brought them to the US. Only the Gold Star registry, which closed about 15 years ago,  kept Juliani pigs separate, the other registries considered them to be pot-bellied pigs and recorded them as such, with no distinction (ie, Sweedish Whites, Connells, and Julianis all appear in registries as "pot-bellied pigs").
Many breeders used the Julianis to get red, silver, or dalmatian-style spotted pot-bellied pigs (instead of the classic mask-saddle markings on most white and black pot-bellies).
Chances are one or both of your pigs has a Juliani ancestor.  Silver babies will stay silver, and wildly spotted black and white babies will, too. Red babies fade to black adults, virtually indistinguishable from any other black pbp, except perhaps for a "rusty" tinge to hoofs and skin. The brown striped baby will probably also fade to black.