Losing a dog is hard enough; setting the time and date in advance  if they have to be put down and then counting down the hours that you have left can be almost more than many can bear. When people who have never had a dog see their dog-owning friends mourn the loss...
Bereavement and managing the various stages of grief which one can go through can be difficult. There are various strategies and some are able to come to terms with what has happened better than others. This is to be expected. We all have different reactions to a loss...