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Guinea Pig in Heat?

Species: Other
Breed: American Guinea Pig
Age: Less than 3 mon
Dear Dr. Marie,

I have a guinea pig named Charlie, and my friend also has a guinea pig named Lulu. Though, they are the opposite sex. And we introduced them a couple days ago. Charlie showed signs of mating, which is I think purring or rumbling. But I do not know if Lulu is in season or not. I would like to know what kiind of signs there are of her being in season. Also, Charlie has not stopped sqealing since he's met her, is that normal? Oh, and I do know that they are too young to mate, but I would just like to know for future preferences. I hope to see a reply soon, and Thank You.


-- SooJi


Online vet, Dr. Marie

Dr. Marie replied:

Hi and thanks for your question.

The best time to mate guinea pigs is around 3-4 months of age.

Usually if a female is in heat and ready to mate you will see her sticking her bum up in the air. This fertile time only lasts about 8 hours or so, so you may or may not see it. Some females will do a little dance when they want to mate, and sometimes they will rub up against the male.

The squealing from the male is quite normal as he is likely quite excited to have a companion in his cage.

Although it may be too late, I would urge you to think carefully about whether you really want to breed these guinea pigs. Breeding animals is something that I recommend leaving to people who do it professionally as there are a number of things that can go wrong.

I hope this information helps.

Dr. Marie.

---This question was asked in our Ask A Vet For Free section.---


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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.