Why is my guinea pig's mouth and chin stained orange or yellow?

It may indicate local infection or irritation. You'll need to have Brownie physically examined by your veterinarian for confirmation and treatment. Make sure there is nothing in Brownie's cage or diet that could cause injury when chewed or eaten. Consider a soft diet, such as Oxbow Critical Care for Herbivores, until Brownie sees the doctor. Keep his cage clean, make sure he continues to eat and drink and keep him warm and stress free as possible. Do not forget his Vitamin C supplementation either.

Thank you for submitting your question regarding Pebbles. I recommend that he sees his veterinarian as he may have an eye infection. The veterinarian will use an ophthalmic scope to evaluate the eyes. He will likely need an eye drop or ointment. Is he sneezing or having any other signs of disease? If so, he could have an upper respiratory tract infection and may need an antibiotic. I hope this information helps!

Thanks for reaching out about Beto. Dark urine can be the result of carotenoids in the urine (from yellow/orange veggies) or other pigments. Although blood is possible, not common in young guinea pigs, but possible. Removing these vegetables from the diet for a short period of time, might change the appearance of urine. Good luck.

Thanks for reaching out about Rocky. The described noise is likely a respiratory infection and he is feeling poor enough to stop eating. He needs to see a veterinarian to aid in diagnosis and treatment of the problem. Antibiotics are probably needed at the minimum. As this sounds serious, the sooner the better chance for recovery. Good luck.

Thanks for reaching out about your guinea pig. A veterinary visit is recommended, tonight if still bleeding, tomorrow is no additional new blood. Fractured incisors are common, as is nose trauma. Teeth can be difficult to determine if fractured as can be below the gum line. Monitor for appetite. Good luck.

Thanks for reaching out about Chloe and including a photo. Yes, you should see a veterinarian as soon as possible. This could be very serious. Gastric distention can be a clinical sign of many problems, but early veterinary intervention has a better prognosis. Good luck.

Your guinea pig may have an upper respiratory infection or a tooth abscess. You should take it to a veterinarian familiar with guinea pigs for a check up of his teeth (guinea pigs often have malocclusions and teeth that are too long). If there is an upper respiratory infection your cavy needs to be treated with injectable antibiotics. Guinea pigs cannot take antibiotics by mouth as it kills their intestinal flora and can indeed kill the guinea pig. Should the crusts go away and your guinea pig eats and drinks well and is happy, then this might have been caused by a draft and it will not need a vet visit.