How awful. Something similiar happened in the UK a couple of months ago - again, the owners refused to sign the cat over despite a rescue being willing to take it, and stayed to watch the vet do it - how can someone have so little emotion to be able to put a healthy animal to sleep - I have lost so many ill cats, that I can't imagine being able to do it for a healthy cat - my foster was recently diagnosed with crystals and the rescue didn't know if they could afford to treat him for it - if they hadn't, I would have adopted him despite not being able to afford it, I couldn't have lived with myself otherwise, apart from being obese he is healthy and has a very good quality of life.