Aww @Clawde  .. @utopia  had similar thing other day too I read. 

I had to get my cat put down years ago. Vet agreed to do it. then they started playing games when I got there, made me hold her while they did the deed.

I wasnt good for a while, but I know she is still around somewhere, and lots of memories, not just of her leaving.

Prob shouldnt say it but driving down the road in my 15 year old car today saw person in a motorised chair with backrest and all the gear and though well, I'm lucky. Poor buggers.