Behavior Essentials

How to Introduce Guinea Pigs and Things to Know when introducing Guinea Pigs

Guinea pigs are social animals that do not like to be alone. They enjoy companionship and social interaction with oth...
Are you getting a new guinea pig? Not sure how to introduce them? Read this post, Bonding new guinea pigs to understand the steps to successfully bond guinea pigs

Can Guinea Pigs Live Alone? Short Answer is NO, They Shouldn't. So Here Are the Steps to Introduce Guinea Pigs.

Guinea pigs are social animals, meaning guinea pigs can not and should not live alone. They enjoy companionship and social interaction with other guinea pigs. In larger groups, they feel safer and therefore happier. Guinea pigs living in groups are more confident, more susceptible to mental stimulation, have a more diverse diet, and are generally healthier. Guinea pigs raised alone are usually more stressed, less active, vocal, and more susceptible to illness. Interaction with your guinea pigs is very important, but no human interaction or care can replace bonding with their own species. We recommend always having at least two guinea pigs in a home so that they will have a companion.

6 Tips To Introduce New Guinea Pigs

Here are some steps and things to watch out for when introducing new guinea pigs!

1. Quarantine 

how to bond new guinea pig

Guinea pigs need time to adapt to new things and can be very territorial of their space. Patience and gradual progress is a must to successfully introduce guinea pigs. The first step is to isolate the new guinea pig until you are sure that he/she is not sick or pregnant. If you really can not isolate them, ask your veterinarian to conduct a full health check on your new guinea pig. Do not place your new guinea pig into the same hutch with your old guinea pig right away.


2. Establishing Dominance

what to do when guinea pigs are fighting

Try to pair the dominant guinea pig with a younger and more passive guinea pig. If you don't know what their personality is like, an older and younger guinea pig is a good start. Physically larger and smaller guinea pigs are also a way to go. They usually establish a natural hierarchy, younger guinea pig to an older one. Note that you should not have a very feisty younger guinea pig with a more laid back older guinea pig. In this case, the young one may challenge the older alpha guinea pig’s position. To read more on why guinea pigs may be fighting you can read our other blog post: 5 Reasons Why Your Guinea Pigs Might Be Fighting.


3. Gender

guinea pig gender

If you have a male, it's better to have another male. If you have a female, you will want to pair it with another female. This is the easiest way to go because it does not require neuter or spay surgery. If you happen to have a female and male in the same cage, they could start breeding very quickly. Guinea pigs can sometimes hide pregnancy really well, so be aware. Generally speaking male guinea pigs are a bit more territorial, so when introducing 2 male guinea pigs, make sure to give them plenty of room.


4. Location

how to take care of guinea pigs

Find a neutral space like outside in a contained area or a spare room for them to meet for the first time. Make sure the hutch or cage is large enough so that they have somewhere to escape from if they feel overwhelmed. The minimum size is 7.5 square feet for two guinea pigs living together but providing the most space possible is ideal for the first meeting. Choose a quiet, enclosed and spacious space that makes both feel safe. Block all interfering factors, such as loud TV, children or other pets. Do not try to force the guinea pigs together. Give them time to build confidence and become comfortable enough to be close to each other. Providing a plentiful amount of fresh veggies can alleviate any worries and help them stick together, be sure to supervise them in case a fight starts. They may start to connect with each other by receiving treats.


5. Clean Cage

how to clean guinea pig cages

If you are adding a new guinea pig to the existing hutch where the old guinea pig lived, make sure you clean the hutch completely and rearrange it so that the two guinea pigs will feel like the hutch is neutral territory. A tip would be to gently rub the hay from the old cage to the new guinea pig’s temporary space so he/she smells more like other piggies before joining. 


6. Fights 

guinea pigs fighting

Make sure you make time to monitor their behaviors and constantly look for positive and negative behaviors. Some positive behaviors would be grooming each other, lying next to each other and sharing food and water. Expect to see some concerning behaviors at first. Concerning behaviors to watch out for are constant teeth chattering, biting, hiding from each other, and chasing. Some of these behaviors are expected in the beginning but if your piggie shows aggression and looks stressed out, end the session early and try it again the next day.



Introducing a new guinea pigs into a home can always be stressful for both you and your piggies. However, be patient with them because in the end, your piggies will be happier with a companion to live with.

Let us know if there is more Information you'd like to see!

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I have two females that I have introduced them slowly (2-3 days). They have been together now for over a month and a half At first things went well but within the last 2 weeks my younger females has been rumble strutting and chasing and mounting my older female. Their area is 2 ft by 5 ft. I feel my younger piggie is always rumble strutting and picking on my older one. The older one won’t even let me touch her she just runs away and hides. Do I need to separate them? Why is my one female always rumbling and picking on my other one? My younger piggie was my first one and I had her for about 8 months when I rescued my older piggie. What should I do?


I’m a new guinea pig owner and purchased Cookie Dough (male) from PetSmart 6 wks ago. The salesperson told me that his brothers and sisters got sick so they separated him to stay healthy. They tried to socialize him with other piggies but he showed signs of aggression so they isolated him, which caused him a lot of anxiety.

Now that we’ve had him for about 6 wks, he’s much more comfortable with us and will socialize with us during his treat times. I would like to get another guinea pig for him but I’m very nervous since he’s shown signs of aggression in the past. I know I should get a younger/smaller piggy, but do you have any other recommendations besides the information in this post?


What do I do if I didn’t do these steps and got a new piggie and a new cage and just put them together and they don’t get along?


I have a male guinea pig and we are planning to give him a new male friend in our cage that is just under 8 square feet. I know I may need to get the new one vet checked, but because our cage is on the smaller side, what is the minimum time I need to keep them quarantined, just because separating the cage is going to make it smaller for them both?


These are great tips! I’ll add a tip for anyone reading this… I once had a guinea pig introduction that went absolutely horribly. Blood was drawn, and it seemed that for sure these particular piggies would never get along. However, I tried separating them for two weeks and trying again. This time I gave them a bath together to bond them and neutralize their smells, and I completely cleaned the cage area. I let them have a few hours of floor time after the bath and— voila. The Guinea pigs were able to get along, and now have been living happily together for 2 years. So if it doesn’t work out, don’t be afraid to give them some time apart and try again.


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