Can someone please offer some advice? My chinchilla is 12 and has been peeing blood for about a year and has lost a lot of weight. I took him to the vet who said he was old but ok. He has had two eye infections in the last few months and been on antibiotic eye drops from vet both times, last week I noticed his pennis was swollen I took him straight to the vet they said they could not see hair rings but wanted to knock him out and insert a catheter and have a look, I was not keen given his age and that when he was fixed five years ago he was so sick after the operation. He had been on antibiotics and pain medds for a week now with three trips to the vet he got a bit better but I am sure it has gotten worse again, I am not sure if I should let them do the procecdure or not, sometimes he is fine and happy but he gets tired after like 30 seconds in dust bath and has not been as active in a while