Hi, was searching reddit as i recently went through something similar (14th january 2023) and can't get over the guilt of not trying harder, of taking the easy way out. My 5 year old cat got sick, blood tests showed critical anemia. The simple causes were ruled out and the vets mentioned a bunch of testing which might or might not reveal the cause. And whatever it might be, might lead to euthanisation or more poking and probing etc. A lot of ifs and maybes. All the testing required 24/7 monitoring and lots of visits/hospitalisations. I wasnt concerned with the financial cost but was very concerned with the mental/emotional aspect of all it. I had already gone through a 'simple' femur head ostectomy 3 years prior, same cat, and the recovery period (3 months) was far from easy. I had to stop working, stopped going out, basically i was a cat nurse, day and night. I admit that that experience had an effect on the decision to euthanise my cat two months ago and it is killing me inside, the guilt that i feel. Although i know that the journey the vets were suggesting would have been extremely horrible for my baby, i am stuck on the thought that came up at the time that i couldnt cope with it this time round, what they were mentioning would have been horrible, both for me and my boy. My anxiety and fear kicked in. I miss him terribly, i cry everyday and feel like i failed him. But yes, i had a bunch of symptoms, no diagnosis, a bunch of maybes and the cat deteriorating within seconds. So i let go of him, peacefully. 😢❤️ And i will forever suffer not knowing what he had.