Here's a bit more information:
* Average Litter Size: The average litter size for guinea pigs is 3-5 babies.
* Factors Influencing Litter Size: The number of babies can vary depending on the age of the mother, her health, and her genetics.
* Large Litters: While 7 is a relatively large litter, it's not unheard of. Some guinea pigs can have litters of 8 or even more babies.
It's great that your guinea pig had a healthy litter! Just make sure they have access to plenty of food, water, and a safe, comfortable environment.