Hi everyone. Unfortunately we received some terrible news today at the vet. We brought in my 13-year old chinchilla, Zoey, because I had discovered a large lump on the left side of her belly last night (April 11th). It seemed like it came out of nowhere overnight, but upon going back through photos on my phone from April 7th, it appears that it started slightly showing then. The vet did a poke biopsy on it and discovered that no pus came out, only blood that smelled and seemed normal, so they figured it was a tumor. They didn't do any other tests to determine if it's cancerous or not (and I regret not asking them to at the time), but they recommended surgery, and she is temporarily scheduled in for this Friday, April 14th. At her age, do you think this is a route to go with, or should I have them do another biopsy on the tumor to determine if it's cancerous or not? I've read that if the lump isn't cancerous and if she's still acting and behaving normally, then to let it be and only go in for surgery if it starts getting so big that it's immobilizing her. I'm having second thoughts about the surgery due to her age and how she's still eating, drinking, and playing normally. I'm so conflicted on what to do. Any advice would be greatly appreciated. I've added a photo of the lump and Zoey's "treatment plan" the vet gave us in regards to the surgery. Thanks so much.