Here's why:
* Territoriality: Female guinea pigs can be very territorial, especially when they reach maturity. This can lead to fighting, injuries, and even death.
* Dominance: There is often a clear dominance hierarchy among female guinea pigs. The dominant female may bully or harass the other, leading to stress and health problems.
* Pregnancy: If you have multiple females, there's a risk of accidental pregnancy, especially if there are males present or if they are not properly separated during estrus (heat cycles).
However, there are exceptions:
* Introducing females at a young age: If you introduce young female guinea pigs together, they are more likely to bond and become socialized.
* Careful introductions: Even with older females, you can try to introduce them slowly and carefully. This may involve supervised interactions in a neutral space before introducing them to a shared cage.
* Compatibility: Some female guinea pigs may be more compatible than others. However, it's still important to monitor their behavior and be prepared to separate them if there are signs of aggression.
To ensure the safety and well-being of your guinea pigs, it's best to consult with a veterinarian or experienced guinea pig breeder for guidance on housing multiple females. They can help you determine the best course of action based on the age, temperament, and individual circumstances of your guinea pigs.