How Big Can Guinea Pigs Grow? A Detailed Look at Adult Guinea Pig Size
How Big Can Guinea Pigs Grow
Many people are concerned about how big guinea pigs can grow, so how big can guinea pigs actually grow? Guinea pigs are not very large; they are smaller than an adult cat, and half the size of an adult rabbit, while an adult rabbit is slightly larger than a cat. It is fair to say that the guinea pig's size is moderate, because it is neither as tiny as a hamster nor does it grow as large as a rabbit, making it better suited for holding and playing with in your hands (about 15-20 cm).
Basically, guinea pigs kept as family pets at most weigh just over 2 jin, while those raised on farms as meat guinea pigs for sale are often fed hormones, so they are definitely heavier than family-kept ones.
The optimal pregnancy period for guinea pigs is between 5 and 9 months. If this time is exceeded or not reached, miscarriage or difficult birth may occur.
It is best to let guinea pigs give birth only at 3 months of age. A 3-month-old guinea pig weighs basically around 500 grams, so you can weigh it to determine whether it has reached the age at which it can reproduce; if it has not given birth by 7 months, do not let it mate. This is because if the first litter is born after 7 months, the guinea pig's pubic symphysis may fail to open during delivery, which may result in difficult birth.
A female guinea pig's first estrus occurs at about 5-8 weeks of age, and the estrous cycle lasts 15-17 days; it is not affected by season and can conceive in all four seasons of the year, with pregnancy lasting about 60-70 days. The delivery process lasts about 10-30 minutes, with one baby guinea pig born on average every 7.4 minutes; guinea pigs give birth to 1-7 pups per litter (normally 2-4 pups, at least 1, at most 7). The number of fetuses is affected by breed and environment: the larger the fetuses, the relatively higher the chance of difficult birth; fetus size is inversely proportional to the number of fetuses in the pregnancy, with each fetus weighing about 80-90 grams on average.