I would say that the main difference is the fact that guinea pigs regularly produce multiple ovum (eggs) for fertilization at the same time. This accounts for the fact that guinea pigs nearly always give birth in multiples. Though this is not completely unknown to happen in humans (twins, triplets, etc), it happens mostly due to scientific intervention.
The lower end of female reproductive tract in pigs is not very different from humans. The reproductive system is conserved across all mammals.
1-5 days
The material flowing from the human female reproductive tract during menstruation is produced by the breakdown of the endometrial lining of the uterus. This tissue and blood are shed during the menstrual cycle if a fertilized egg is not implanted.
Male sperm can survive in the female reproductive tract for up to 5 days, while female sperm can survive for up to 3 days.
Human sperm move through the female reproductive system by swimming using their tail (flagellum). They are guided by chemical signals released by the egg and the female reproductive tract, which help them to navigate towards the egg for fertilization.
stomach and female reproductive tract
Male sperm typically survive in the female reproductive tract for up to 5 days, while female sperm can survive for up to 7 days.
The upper female genital tract consists of the body of the uterus, the fallopian or uterine tubes, and the ovaries.
The lower female reproductive tract consists of the vagina, cervix, and uterus. It is where sperm travel to reach the egg for fertilization, and where a fertilized egg implants and grows during pregnancy.
Chlamydia and yeast infection are caused by different microbes, have different risk factors, and different symptoms. They both can affect the female reproductive tract.
A female horse's reproductive tract is much more like a human's, with a uterus designed to carry a single foal at a time. The uterine body is large and the uterine horns are relatively short. A female dog's uterus is essentially Y shaped and designed to carry multiple puppies. Each puppy has it's own placenta.
The penis is the organ than delivers semen to the female reproductive tract during sexual intercourse.