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Female guinea pig with wet back end, smelly and scooting

Gemini

Junior Guinea Pig
Joined
Jan 4, 2026
Messages
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Location
Sheffield, UK
Hi there, I have recently taken on 2 guinea pigs from someone who didn’t want them anymore and both seemed healthy. But I have noticed one of them is now wet on the back end with a very strong smell coming from there. Her tummy is a little harder than the others but not seen any sign of blood but she is scooting sometimes. I’ve tried some urinary bites to help her and have been cleaning the cage as much as I can along with cleaning her but wondering if this is something I can treat at home with some antibiotics or should I take her to the vets? I’ve already reached out to the vets and waiting them calling me back.

TIA
 
I’m sorry to hear this

Please do have her seen by a vet - You will need a diagnosis as to what the issue might be (there are several possibilities as to what this could be - a bacterial infection, bladder stones or sludge, reproductive system issues etc). Antibiotics and painkillers are prescription only, and we never recommend any home treatments (in UK law only a vet can diagnose and prescribe).

In the meantime ensure you weigh her each morning so you can ensure she is eating enough hay to keep her weight stable. If she is losing weight (any pain can stop them from eating enough hay) then please do step in and syringe feed her a recovery feed

Let us know how you get on at the vet

Emergency and Crisis Care as well as Bridging Care until a Vet Appointment
How to Improvise Feeding Support in an Emergency
Weight and Weight Loss Explained: BMI, Weighing, Poos and Feeding Support
Wiebke's Guide to Pees and Stones
 
I’m sorry to hear this

Please do have her seen by a vet - You will need a diagnosis as to what the issue might be (there are several possibilities as to what this could be - a bacterial infection, bladder stones or sludge, reproductive system issues etc). Antibiotics and painkillers are prescription only, and we never recommend any home treatments (in UK law only a vet can diagnose and prescribe).

In the meantime ensure you weigh her each morning so you can ensure she is eating enough hay to keep her weight stable. If she is losing weight (any pain can stop them from eating enough hay) then please do step in and syringe feed her a recovery feed

Let us know how you get on at the vet

Emergency and Crisis Care as well as Bridging Care until a Vet Appointment
How to Improvise Feeding Support in an Emergency
Weight and Weight Loss Explained: BMI, Weighing, Poos and Feeding Support
Wiebke's Guide to Pees and Stones
Thank you! She’s eating and drinking absolutley fine. I am currently changing her diet as they were feeding her mainly on kale so I’m wondering if she could just be backed up with too much calcium. But I will get her to the vet as soon as I can. Thank you for the help!
 
Thank you! She’s eating and drinking absolutley fine. I am currently changing her diet as they were feeding her mainly on kale so I’m wondering if she could just be backed up with too much calcium. But I will get her to the vet as soon as I can. Thank you for the help!

Ah I see, it could well put her at risk of this being sludge or even a stone. It would be best if she could see the vet asap - within a day or two - given the risks and pain such issues pose.

Changing her diet is good - it won’t fix any issues which are currently there though but it will help going forward.
 
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