Guinea pig hooting sound: Is it a symptom of a heart problem?

This sign might be compatible with a chronic respiratory tract inflammation/infection, even though is quite vague at this stage. My suggestion would be to just monitor him in case you notice any other sign (lethargy, inappetence, coughing, sneezing, any evident discharge from nose and so on). Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

You could take your guinea pigs to a vet for a yearly physical examination to make sure that everything sounds good and the guinea pig is healthy. That way, your vet may be able to identify and treat problems before the guinea pig is showing signs.

I wouldn't say normal. There could be a few conditions happening. I would make sure his teeth are even and there isn't an uneven surface causing discomfort. Oral and respiratory infections can happen which could cause a sore throat which could change the voice. If there are Cedar or Pine shavings for a bedding this can sometimes cause allergies with Guinea Pigs. Also a diet lacking in Vitamin C could be the cause. Always make sure you have the correct husbandry or it's easy for problems to occur. I would recommend keeping a close eye on him and if he is acting abnormal (not eating, drinking, abnormal feces or urinating) then he should visit a local veterinarian. Guinea pigs are very fragile and can look normal one instant then sick in another. Here is a link for proper husbandry of guinea pigs. Https://www.aspca.org/pet-care/small-pet-care/guinea-pig-care

Thanks for reaching out about Carmello and including photos (but pictures do not show any problems). Upper and lower respiratory infections are common and can cause congestion (sounds). Heart disease is not uncommon in middle aged/older guinea pigs also. A veterinary visit would be a good idea. Warm ears could be an indication of a fever. Monitor food and water intake, monitor noises and see if you can locate to a certain area or situation. Good luck.

Guinea pigs are very vocal creatures, but it will take some time for you to learn what are normal noises and what are not. I would error on the side of caution and have him looked at. Most places have a several day health guarantee, but you will have to see what your individual store will do for you. I hope he's back to his new home in no time!

Based on what you are describing I would be concerned about a respiratory disease going on with Henry. It would be best if you could take him to be examined by your veterinarian because he will most likely need antibiotics and possibly an anti-inflammatory medication to help stop the cough. The veterinarian may also want to perform radiographs to assess the lungs and heart. I would also recommend you look at this article about nutrition and husbandry for guinea pigs to make sure Henry is getting all the nutrients he needs to stay healthy. https://www.petco.com/shop/PetcoContentDisplayView?storeId=10151&catalogId=10051&langId=-1&path=/content/petco/PetcoStore/en_US/pet-services/resource-center/caresheets/guinea-pig.html I hope this helps. Please let us know if you have any additional questions. Best of luck.

Thans for reaching out about your guinea pig. It sounds as if he has an upper respiratory (and possible lower respiratory) infection. A veterinary visit is recommended to provide a diagnosis and treatment plan. The sooner the better, especially with the bleeding from the nose. Good luck.