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This article was co-written by Pippa Elliott, MRCVS. Dr. Elliott is a veterinarian with over thirty years of experience. She graduated from the University of Glasgow in 1987 and worked as a veterinary surgeon for 7 years. Then, Dr. Elliott worked as a veterinarian in a clinic for over a decade.
This article has been viewed 16,300 times.
Many guinea pig owners have difficulty determining their sex, especially with newborn guinea pigs. [1] X Research Source Sex determination of your guinea pig can help you prevent unwanted pregnancy when other mice are brought into the colony and determine if the pups need to be separated from the mother. [2] X Research Source Although many veterinary clinics offer guinea pig sexing services, you can also do this yourself.
Steps
Check guinea pig
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Be careful when examining very young guinea pigs. Newborn guinea pigs are very sensitive and can get upset when away from their mother. They also get cold easily, so do your test in a warm place and try to act as quickly as possible.
- Determining the sex of very young guinea pigs is extremely difficult. You can wait until the rat is 2-3 weeks old, at which point sex determination will be much easier [3] X Research Source . However, since males need to be separated from their mother and herd at 3 weeks of age, you must have their sexes sorted before this point, otherwise the males may mate with the mother and other animals. his sisters.
- Don’t worry about coming into contact with baby guinea pigs. Their mothers will not abandon their children and the young will also be bolder when they are exposed to humans early. [4] X Research Sources
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Wash your hands before and after handling your guinea pig. You can pick up pathogens from guinea pigs and they’re also at risk of being affected by things on your hands (such as hand sanitizer, hand cream, etc.), so it’s important to do it regularly. Hand washing is extremely important.
- You don’t need to wear gloves. Guinea pigs rarely transmit disease from humans, and gloves are not very helpful in preventing disease from spreading from one individual to another in the rat colony.
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Carry out the mouse test in a low and stable place. Young guinea pigs will often get annoyed when picked up and held in one place for too long. Place a clean, soft towel on a low, sturdy place, such as a low table, or spread the towel directly on the floor when preparing to test your mouse for the safest and most comfortable place. .
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Hold the mouse firmly and gently. Guinea pigs are easily frightened and will often react when frightened. To avoid causing the rat to panic, gently hold it firmly around the mouse’s chest and shoulders; Place the mouse on its back or sit so that its abdomen and genitals can be viewed. This will make it easier for you to examine the rat’s external genitalia. [5] X Research Sources
- Baby guinea pigs don’t like to stay on their backs for too long, so try to get them checked out quickly and efficiently. You can ask someone else to hold the mouse down for faster checking.
- Give your guinea pig food while you’re checking. Rats will cooperate and be less afraid.
Determine the sex of the mouse
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Check the distance between the anus and the external genitalia. First, look for your guinea pig’s anus, which is a gray or brown vertical slit under the genitals. [6] X Research Sources
- Once you’ve identified the guinea pig’s anus and external genitalia, you’ll want to consider the distance between them. The distance from the vulva to the anus of female guinea pigs is quite short, usually their vulva will be located just above the anus. The distance from the penis to the anus of the male guinea pig will be larger, they are usually about 5-7.5 cm apart.
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Examine the shape of the external genital opening. Look closely, female rats often have a very smooth ripple on the vulva. When using your fingers to gently separate the genital opening, if you see a “Y” shape, it is a female guinea pig. [7] X Research Sources
- The male guinea pig’s genital opening is shaped like a small round dot with the penis protruding beyond the surrounding skin.
- There is a bulge in the area between the genitals and anus of the male guinea pig. This bulge occurs because the rat’s testicles are located just below the skin, along the anus and penis. You should also check to see if there is a raised circle around the anus of the mouse, which is the location of the base of the testicle.
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Gently press just above the genital opening to find the penis. Sometimes the penis of a male guinea pig is not very conspicuous, especially when the mouse is large and heavy. To make the rat’s penis stick out, use your finger to gently press near the genital area, you will see the mouse’s penis. [8] X Research Sources
- You can also use your fingers to gently press and rub just above the genitals. If you feel a ‘ripple’, it’s the inside of the penis and you can be sure it’s a male guinea pig.
- While examining your rat’s penis, look for testicles on either side of the penis to make sure the guinea pig is a male. The testicles of guinea pigs are quite large for their body size.
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Ask a qualified veterinarian to confirm the sex of your rat if you are unsure. Determining the sex of a guinea pig is not an easy task, even if you have carefully examined it yourself. If you’re not 100% sure, you can bring your rat to your vet for help. Find a veterinarian you can trust and/or have helped you with sexing your guinea pig before as even highly knowledgeable veterinarians can misidentify a rat’s sex. [9] X Research Source
- You should take your guinea pig to the veterinarian if, during sex testing, the rat appears upset or uncooperative. If your guinea pig is stressed or struggling too much during a home sex test, it will be difficult for you to get an accurate result.
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This article was co-written by Pippa Elliott, MRCVS. Dr. Elliott is a veterinarian with over thirty years of experience. She graduated from the University of Glasgow in 1987 and worked as a veterinary surgeon for 7 years. Then, Dr. Elliott worked as a veterinarian in a clinic for over a decade.
This article has been viewed 16,300 times.
Many guinea pig owners have difficulty determining their sex, especially with newborn guinea pigs. [1] X Research Source Sex determination of your guinea pig can help you prevent unwanted pregnancy when other mice are brought into the colony and determine if the pups need to be separated from the mother. [2] X Research Source Although many veterinary clinics offer guinea pig sexing services, you can also do this yourself.
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