Can piglets of the same litter have different fathers?...I need to know for my class, I also have to explain my answer. If anyone can help me that would be great!

Thanks

Yes. Animals that have babies in litters can have babies of up to several fathers.

Unlike with humans, mating is what triggers ovulation in pigs and other domestic animals.

For more, click the cached version of some of these:
"same litter" "different fathers" - Google Search

I had absolutely no idea.

I've studied medical genetics, comparative vertebrate anatomy and embryology... but nothing about animal husbandry.

I absolutely didn't know that about pigs.

And I live in the midwest.

Well there you go. Thanks for filling up a neuron with new info.