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This is my female guinea pig (4 yrs old) who is behaving healthy and seems fine but I noticed what looks like a mammary gland tumor. I live in India in a city where hardly any vet deals with Guinea pigs. I am planning to travel about 400 miles just to get a surgery. I'd like to know a few things: 1. People say surgeries have success rate of 50 percent. Is that true? 2. It would take atleast 15 days when my college break starts & I can take her for surgery. Will it be fine for her? 3. Can anyone share their experience about mammary gland tumor removal? I'd really appreciate a response!