They are very dangerous they might eat you!
Female Guinea Pigs can be in heat for only up to a few hours - it depends on the pig. During this time, this is the only time a litter can be conceived. Behaviour includes mounting other pigs, swaying side to side and protruding their bottom in the air and loud squeaking.
Pigs typically ejaculate around 100-350 milliliters of semen during mating.
Pigs typically produce around 100-350 milliliters of ejaculate during mating.
JFK
Pigs typically experience orgasms during mating that last around 20-30 seconds.
The Bay Of Pigs
Pigs typically take around 15-20 minutes to reach climax during mating.
bay of pigs
Nikita Kruschev
If their behaviour has gone throught a dramatic change then it might be something that you have changed for the guinea pig, If it is hardly moving or not eating its food it might be depressed or upset.
Unborn pigs refer to pig fetuses inside the mother's womb. They develop during pregnancy until they are born as piglets. These unborn pigs are also known as pig embryos or piglets in utero.
Coelomate is another word for a body cavity during early development of an animal. All mammals including pigs are coelomates.