How do you know you did the right thing when it comes to putting your don’t to sleep?

How do you know you did the right thing when it comes to putting your don’t to sleep?

He was a old dog this picture was taken back in March. Over the last few days me and my brother have been hand feeding him but he was getting worse he hand because of a big lump on his throat. So he could eat anymore or drink anymore it’s been over 100° out he had gotten delirious unresponsive and it was clear he was in great pain. I took him to the vet they told me this time last year he had 6-9 months it’s been a year. He’s has been having these episodes for a few month now where he couldn’t move or eat kept barfing every time he recovered but it’s got more and more frequent so I made the decision and talking to the vet to let him go. I wonder if I made the right decision to recover what if I just got worse it’s been one of my best friends for 13 years I don’t wanna see him suffer anymore but I don’t know if there’s something I could’ve done to save them this time I don’t know if I made the right decision or not I know he’s no longer in pain right now I’m torn up about it I hate losing dogs The last dog that died and I had I was 17 and made the decision I made at this time how do I know it’s the right one?

How do you know you did the right thing when it comes to putting your don’t to sleep?
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