My dog Buster died on Sunday at 16 years old.

Hi friends,

I've had my dog since I was 16 years old as a puppy and on Sunday he passed away by euthanization. I made him an appointment for a check up just a day later on Monday. He wasn't displaying any symptoms besides athritis which he was on meds for, but the last day he stopped eating, drinking, and just walking in circles so I rushed him to the ER vet. The vet said he possibly had a brain tumor but without tests she wasn't 100% sure. At 16 years old she recommended to euthanize because he wouldn't be able to withstand anything. I'm dying from the pain and guilt. Looking back I wish I got tests done at his last appointment which was just 6 months prior but the vet said he looked great just athritis. He did lose weight and have accidents but the vet said that comes with age and he wasn't concerned. I seriously hate my self that I didn't trust my gut. He was my best friend and was with me through every milestone and death of my mom.