One is genetically a pig, the other is genetically a human. It's all about them number of chromosomes....
Yes.
A human fetus is a unborn human. In fact it should not be called a fetus, but simply just a baby. For any change that that baby (or fetus) goes through that does not kill him or her, he or she...
No, because it gets it's gas exchange done by it's mother.
Legnth of gestation