Theres no f*****g joy in having to cull any animal that you have had in your care mate and anyone who says there different is a bit of a twat imho.
When you rehome something, all I will say is "Be honest about who you are doing it for".........is it for the dog or to make the ex-owner feel better.
a lot of a twat in my opinion,and the sooner people realise this the better,dont make you hard,big or fecking clever, if anything one of the most gut wrenching things you will ever have to do