Copyright Natalie's Skinny Pigs 2010


All the information you are about to read is how to breed Skinny Pigs from my point of view. I have been breeding for 8 plus years and I have learned so incredibly much and am still learning with every litter. It is okay if you have different opinions since not every breeder does things the same.


When first deciding to breed your Skinnies (or guinea pigs), you must make sure your sow is under 7 months old when first being bred. After she is about 9 months old her pelvic bones fuse together which makes delivery impossible. If your planning on breeding your sow and she is over 9 months old then it WILL result in a caesarean section and she will most likely die. Skinnies (or guinea pigs) do not do well with pain and it would not be a good idea to risk her being bred so late. The sow must weigh at least 500 grams and be about 3-5 months old. 

Do not breed your Skinny Pigs (or guinea pigs) if you have no idea what you are doing! Read several books before hand, and browse several sites on the internet. You can also contact me about any questions you might have. Experience is always the best. 


A sow will come into season about every 18 days and stay in season for about 24 hours. I have seen my Skinnies mate before when the sow was not in season, but its just depends on there attitude of the situation. Usually the boar should be at least 4 months old before being introduced to a female. You want him to be mature and sturdy for his new duties :)  My Skinny boars sometimes get very beaten up by the sows when they are not in season and some even loose a little weight from running around all day chasing his mates. She might even spray him with urine to tell him that she is not ready. 

When a sow is in season she will let the boar mate with her several times within the 24 hours. The boar will do his mating dance, make rumbling sounds, and shake his little bottom to impress her. After she is bred they usually become really good buddies.



The gestation period is about 60 to 70 days with the average being at 65 days. Its a very long gestation unlike gerbils or hamsters. This is because Skinny (or guinea pig) babies are born completely developed, eyes open, and walk around within hours after being born. Depending on the size of the litter, you might not notice the babies moving or change in body size until about 1 month before the birth. If you have experience then you will probably be able to tell sooner. If she is carrying a big litter then she will become notceably large. When she is in her last 2 weeks from delivery then I recommend not picking her up unless your cleaning the cage. Make sure you hold her rear end with one hand and her front with the other. Do not squeeze her tummy at all! Just gently lay your hands on her sides and you will be able to feel little kicks and movement.
During Pregnancy your sow will require 2 times more vitamin C and fresh greens. I give my sows an assortment of bananas, strawberrys, cucumbers, roman lettuse, spinach, carrots, etc. They also receive vitamin C and calcium tablets.


It is sometimes very hard to tell exactly when they will give birth. My sows are video monitored there last 2 weeks of pregnancy. Thanks to the video monitor I have watched many pregnant sows and seen many births.
As I said in the beginning, all of this is from my point of view in which I am giving you my oppinon about. From my experience, the sows sides will get very hard when they are about to give birth. You will be able to feel the back bones, and other parts of the babies bodies very clearly. You should be able to fit your finger or more between her pelvic bones. These are both signs that she is days, maybe moments away from giving birth. Make sure her bedding is soft and comfortable. 

Some immediate signs that she is in labor is a hiccupping motion which is her pushing the babies out. Other signs of labor is she might roll on her tummy and turn in circles several times looking for her babies. With each contraction she will push the babies out one at a time, with about 5 - 10 minutes between each baby. Some will take the sow longer to get out and some will slide their way out.

If you are present at the birth then in my oppinion, help her out. I will remove the sack on the babies nose right away and use a baby booger sucker to suck out there mouths and noses. If I notice the baby barely moving then I will pull its ears gently and rub its tummy and back just like mom might do. Sometimes I will leave it next to the mom to take care of after I have removed the sac from its nose. Other babies I will pick up and make sure its moving and breathing normally. When I am present at the birth, I almost never just let her do it all. I would never want to risk a baby dieing because I didn't help.
After the birth is over you can let her eat the placentas if you would like or I just let her eat one and throw the rest away. The sow will come into season right after giving birth but never let her rebreed that quickly. It is very hard on your sow already to be having babies, and she will need time to rest. I might rebreed after the babies are weaned from mom but it depends on how sturdy the sow looks.


Babies are born fully developed with no furr unlike guinea pigs, teeth, eyes open and run around within hours after the birth. From my experience some babies might get the shavings in their eyes and then become irritated so I put a towel down for about a week. Sows only have 2 teats which means the new borns have to take turns. Usually they are pretty good about it but I still make sure each one is at the proper size each day and watch for ones that are smaller than others.


I will bottle feed all the babies about 2-4 times a day if it is a litter of 3 or more.  This ensures their survival and keeps them going strong. I do not force them to drink the milk, they usually suck about 1 tablespoon down in a day. They can have cat replacer milk that you can buy at your local pet store. When they are about 3 days old, I will start feeding them carrot, green bean, or mixed vegetable baby food through a syringe. They should start nibbling on solid foods within a couple days after birth. I will stop the bottle feeding and syringe feeding when I see them gaining weight and eating solid foods. They are weaned at about 3-4 weeks.

               If you have any questions or concerns, feel free to contact me.

Natalie's Skinny Pigs