These groups offer various grief support resources to help you and your family deal with your loss.
Day by Day Pet Support
http://www.daybydaypetsupport.com/support-circles/
The Association for Pet Loss and Bereavement
Everlife Memorials
http://www.everlifememorials.com/v/pet-loss/pet-loss-support-groups.htm#fl
Chance's Spot: Pet Loss and Grief Support
http://www.chancesspot.org/index.php
Includes support for children.
ASPCA Pet Loss 24 Hour Hotline
877-474-3310