http://www.lib.ox.ac.uk/internet/news/faq/archive/pets.pet-loss.html
The Rec.Pets.* Grief and Pet Loss FAQ is designed for people who have just lost a beloved companion animal. The tone is serious and the material fairly extensive. Topics covered include--which pets cause the strongest attachments, the manifestations of grief, how to help children when their pet dies, the pros and cons of euthanasia (i.e., will the animal be able to enjoy life if not euthanized?) and a short section on the responsibility of the veterinarian to assist the grieving family. A reference list for adults and children can be found at the end of this FAQ.