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Why Do Guinea Pigs Eat Their Babies?

Picture for a second that you’re a guinea pig owner (if you’re not already). You noticed one day that your Guinea pig had put on a lot of weight, so you took her to the vet and found out she was pregnant.

You waited excitedly throughout the duration of the pregnancy (64-72 days) and one evening you finally got to see three cute, baby Guinea pigs, or pups, emerge. You leave your Guinea pig overnight to give her time to clean her babies and begin to nurse them.

When you come back the next morning, you notice that there are now only two, not three, pups. What happened? Did your Guinea pig eat one of her babies? Why???

What Happens When Baby Guinea Pigs (Pups) Are Born

Guinea pigs are precocial, meaning that when they are born, they have fully developed eyes, teeth, and a coat of fur. They are generally about three or four inches (eight to ten centimeters) long and weigh around 2.8 ounces (80 grams).

A full-grown adult Guinea pig is about eight to ten inches (20 – 30 cm) long and weighs approximately two pounds (900 grams). This means that a baby Guinea pig is about half the length of an adult and about 12 times lighter!

Pups need time with their mother. When pups are born, they are licked clean by their mother.

Usually, their mother will begin to nurse them in the first few hours after their birth. Although baby Guinea pigs are able to eat solid food within hours after being born, they continue to supplement their solid food with their mother’s milk for three to six weeks after their birth.

It is generally recommended that a pup not be separated from its mother until it is at least six weeks old. It is at this age pups are generally fully weaned.

Why Female Guinea Pigs Eat Their Babies

It is very uncommon for a Guinea pig mother to eat her babies.  The situations below are examples of those rare times when a mother might eat her pups.

These are all avoidable situations if the Guinea pig is given proper care and environment.


One reason why a Guinea pig mother might eat one of her pups is that she is extremely malnourished. When a Guinea pig is malnourished, it means that she is not getting enough of the vitamins and nutrients that her body needs.

This can happen if the Guinea pig is not being fed enough timothy hay, pellets, vitamin C supplements, etc. After birthing the pups, if the mother feels malnourished, she will often try to eat the placenta to nourish herself.

In some instances, the mother will accidentally eat the pup along with the placenta. This can especially happen if the pup is stillborn.

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It is important to note that malnourishment is not the only reason why a Guinea pig mother eats the placenta. A Guinea pig mother might eat the placenta before or after cleaning the pups in order to have nothing around that would attract a predator.

It is also believed that the Guinea pig mother needs to consume the placenta in order for chemical reactions to take place in her body to allow milk to begin to flow.

Scarce Resources

While malnourishment can result from a Guinea pig not having enough nutrition before or during the birth, if there is not enough food or water in the cage after the birth, the Guinea pig mother might believe that resources are scarce. If the mother believes that there is not enough food and/or water for her pups, she might begin to eat her pups in order to have fewer mouths to feed.


Guinea pig stress signs

Anything that may cause a Guinea pig mother unnecessary stress or anxiety can cause her to eat her pups. One such trigger is environmental noise.

Even when not pregnant, Guinea pigs are sensitive to loud noises. When pregnant or just after birth, a Guinea pig mother might begin to feel overwhelmed if there is too much noise present. 

Another source of stress and anxiety for a Guinea pig mother is overcrowding. If the Guinea pig mother shares a cage or hutch with several other Guinea pigs, she might become overwhelmed by the level of activity and lack of space around her.

This can also be true if she is housed in a cage or hutch that is too small for her and her babies.

Malnourishment, scarce resources, and stress/anxiety are a few reasons why a Guinea pig mother might eat her babies. However, an instance of a Guinea pig mother eating one of her pups is very rare.

If the mother has not eaten any of her pups within 24 hours of the birth, it is not likely that she will eat her babies at all.

Why Male Guinea Pigs Eat Their Babies

Why male guinea pigs eat their babies

While it is rare for female Guinea pigs to eat their babies, it is extremely rare for a male guinea pig to eat a pup. One reason for this is that male Guinea pigs are typically separated from their pups as the pups stay with the mother to nurse.

This means that a male Guinea pig would not have access to its babies in order to eat them. If a male Guinea pig does eat a pup, it is believed to be due to territorial behavior.

It is also believed that if a male Guinea pig feels threatened by a pup, he might eat the pup.

Will a Guinea pig eat its babies because a human handled them?

NO. It is a myth that a Guinea pig will eat its babies, or even reject them if a human has handled them. It is even believed by some that if a Guinea pig is used to you and your scent, handling the pups will put the mother at ease because she recognizes your scent on the pups.

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If you have newborn pups, it is best to leave them alone with their mother for about a week while their bones become strong before trying to handle them. After a week, it can be beneficial to handle the pups a bit so that they become comfortable being handled by a human.

If you have to handle them before this time, it is okay, but make sure you are gentle with them.

How To Ensure Your Guinea Pig Does Not Eat Its Babies

As mentioned above, baby Guinea pigs need time with their mother to supplement their food with their mother’s milk. If Guinea pigs need to be with their mother after being born, how can we prevent the mother from eating her babies?

To reduce the chance that your Guinea pig will eat its pups:

  • Watch the mother after she has given birth to make sure she doesn’t get confused between the placenta and the pup
  • Wait until she is old enough to breed in the first place (at least 3 months old) so she will be mature enough to properly nurse her pups and not eat them
  • Make sure your Guinea pig has sufficient nutrition prior to the birth. Generally, a Guinea pig should have 1/8 cup of pellets per day, one cup of fresh vegetables, and unlimited timothy hay. During pregnancy, a Guinea pig will need an unlimited amount of pellets instead of just 1/8 cup.
  • Ensure that there is enough water and food in the cage during and after the birth
  • Immediately remove any dead or deformed pups from the cage

If you follow these suggestions, it is less likely that your Guinea pig will eat her pups.

How To Ensure Your Guinea Pig Does Not Eat Its Babies


While it is very uncommon for a Guinea pig to eat its babies, there are a few instances in which a pup may be eaten by its parent. A female Guinea pig might eat one of her babies if she is malnourished if she feels there is not enough food and/or water for her and her pups, or if she is stressed or anxious.

A male Guinea pig might eat his babies because he is territorial and feels threatened. It is very rare for a female Guinea pig to eat a pup and even more unlikely that a male will consume a baby Guinea pig.

Guinea pigs are docile by nature as they are prey animals.  They are not by nature cannibalistic.

If you notice that your Guinea pig has eaten it’s young, it is likely unintentional or done as a means of survival.

While it is not your fault if your Guinea pig eats its babies, there are measures you can take to reduce the likelihood that it will happen. Keeping a close eye on your Guinea pigs during and after birth and making sure that your Guinea pigs are properly fed can help immensely.

Taking a few precautions can help your Guinea pig have a healthy, happy family.