erin basically said what i was referring to. Whenever you put a male and female together, you have a lot that can happen- male can attack the female, feamle attack the male. Breed backs, toxmonia, babies too big to pass, still borns, mother dieing leaving you to hand feed, mother not taking care of the babies, mother and babies both dieing , and the list goes on and on. I also strongly believe that only the best pigs should be bred(animals from good breeders) because with hand offs , rescues or petstore animals you dont know what is in its genes. It's father or grandmother could have died from maluccssion(sp??) and this is passed on, if you dont know it's in the lines, then your breeding animals who are subtile to this.