@TTH,
This cat wasn't scared of anything or anybody. I picked him up as a tiny kitten off the street, fed him out of a silver dish, carried him around like a baby. When he matured, he became unmanageable and feral. I really had no viable alternative but to put him down, and my vet agreed with me. It was not a cavalier decision and I've never regretted it. I have had five cats since then, all lovely, and when they got old and sick, I mourned at having to put them down. I am not a meanie; far from it.