Guinea Pig Female Vs Male

Whether you’re considering adopting a guinea pig or already have one, you may be wondering about the differences between males and females. While both genders make great pets, there are some distinct characteristics that set them apart. In this article, we’ll explore the similarities and differences between male and female guinea pigs, helping you navigate the choices when it comes to bringing one of these adorable creatures into your home.

Physical Differences

When it comes to physical appearance, there are a few key differences between male and female guinea pigs. Understanding these distinctions can help you identify the gender of your pet or choose the right one.


In general, male guinea pigs tend to be larger than females. Adult males typically weigh between 900 and 1200 grams, while females usually range between 700 and 900 grams. It’s important to note that these are just averages, and individual guinea pigs may vary in size.


One of the most obvious differences between male and female guinea pigs is their genitalia. Male guinea pigs have a noticeable penis sheath located just below the anus. On the other hand, female guinea pigs have a genital opening that is closer to the anal opening.

Urogenital Papilla

Female guinea pigs have an additional identifying feature called the urogenital papilla, which is a small, fleshy bump located just below the genital opening. This is a reliable indicator of the guinea pig’s gender.

Behavioral Differences

Beyond physical characteristics, male and female guinea pigs also exhibit some behavioral differences. These differences can help inform your decision when choosing a pet or understanding the needs of your current guinea pig.


Male guinea pigs are generally more territorial and prone to aggression than females. This is due to their instinctual behaviors and hormonal differences. If you’re considering keeping multiple guinea pigs, it’s important to note that males might be more likely to fight with each other when establishing dominance.


When it comes to compatibility, female guinea pigs tend to get along well with both males and females. However, male guinea pigs usually do better in pairs or small groups with other males. Placing two males together can reduce the likelihood of aggression and provide companionship.

Health Considerations

When caring for guinea pigs, it’s essential to be aware of any gender-specific health concerns. Here are a few considerations for both male and female guinea pigs:

Reproductive Health

Female guinea pigs have a risk of developing ovarian cysts or uterine tumors, especially as they get older. These conditions can cause discomfort or even require surgery. Spaying can reduce the chances of these health issues but is not without risks itself.

Urinary Health

Male guinea pigs may be more prone to urinary issues, such as urinary tract infections or the formation of bladder stones. Providing a balanced diet and ensuring access to fresh water can help prevent these problems.

Frequently Asked Questions

Now that we’ve explored the differences between male and female guinea pigs, let’s address some commonly asked questions to provide further insights.

Q: Can you keep male and female guinea pigs together?

A: Yes, you can keep male and female guinea pigs together, but it’s important to spay or neuter them to prevent unwanted pregnancies.

Q: How do I determine the gender of my guinea pig?

A: You can determine the gender of your guinea pig by examining their genitalia. Male guinea pigs have a more prominent penis sheath, while females have a urogenital papilla located just below the genital opening.

Q: Are male or female guinea pigs easier to care for?

A: Both male and female guinea pigs have similar care requirements, so neither gender is necessarily easier to care for. It ultimately comes down to personal preference.

Final Thoughts

When it comes to choosing between male and female guinea pigs, understanding the differences in physical characteristics, behavior, and health considerations is crucial. Both genders make wonderful pets, and the decision should be based on your personal preferences and the dynamics of your household. Whether you choose a male or female guinea pig, providing a loving and caring environment is key to ensuring they live happy and healthy lives. So go ahead and welcome a furry friend into your home and enjoy the joy they bring!

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