Well, I don't mean to be harsh but was there a medical reason why you had him PTS? I know you said he was going outside the box and meowing all night but that could have meant he was ill or he had a behavioral problem. Some cats are deaf from birth and that is not a reason either to get him PTS. I have a 1 year old kitty that likes to meow all night. But that is just to get me out of bed to feed her. Cats are naturally nocturnal. Up all night and sleep all day. Tiger may have been meowing because he was lonely or because he needed something. And also my 1 year old kitty has used outside the box. She only does this when it is not clean enough for her liking. She has to have a clean litter. I am sorry you had Tiger PTS especially if he didn't have something that was taking away from his quality of life and if he wasn't suffering.
I am sorry Tiger. Rest In Peace sweetheart.
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