Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Let's start with the dog. His name is Scooter and he has arthritis and bad legs. We have been through a lot together and I'm not ready for him to cross the rainbow bridge just yet. I just need to have a plan in place for when he does need to go the big farm in the sky. He spent most of his life with my ex and his family. He is basically my ex's childhood pet. My ex (who we shall call Steven) and I then became primary caretakers for about 2 years until our break up. I have been the dogs primary caretaker for the last year. 


The reasons I am hesitant: 
To put it bluntly: my ex is a psycho. He was a volatile and abusive drunk and he would lash out at me and Scooter, threaten us, threaten to harm himself, drive aggressively to scare me. He even crashed the car on purpose because i had the nerve to hop in the car and ask him not drive because he was hammered. He would tell me that I would never be able to outrun him so I shouldn't try, he would scream and curse and tell me he hated me, he would cry and say I was all he had in this world. He bit me, threw rocks at me because the thought I was talking to other guys. Quit his job, which forced me to work 2 jobs, 7 days a week to support all the drinking and weed and cigarettes. He hit me, choked me, screamed at me, laughed at me while I cried, accused me of lying when I tried to explain that he hit me again during one if his blackouts. I have absolutely zero interest in EVER speaking to him again. 

The last time he saw me and the dog he was trying to beat the shit out of us. He got blood all over my car, threatening to hurt himself, to hurt me. Physically picked up Scooter and threw him on the ground. The last time Scooter saw him, he cowered on fear. I spent an hour holding the old dog and crying in the car after I finally kicked my ex out of my life for the last time. I told him he wasn't allowed to have Scooter if he was going to mistreat him. So essentially I assumed ownership of the dog with little argument from Steven. 

I don't want to break no contact and bring this traumatizing person back into my life. Not after I've gone so far in improving my self worth. 

But Scooter was his dog so I don't know if Steven deserves the knowledge that he's passed on. Should I let him say goodbye? AITA for even thinking of putting down a dog that spent so much time not being mine? My normal isn't normal so I really don't know what's okay in this situation. I'm worried because it's getting colder and Scooters arthritis is getting worse. I don't want him to live in pain. 

Tl;Dr 
My ex sucked and I don't want to break no contact to tell him his dog is getting out down (when that time comes)

putting my ex's dog down and not telling him about it