[header] How to cope with guilt after a dog's death [title] Focus on your intent. [step] If you chose to euthanize your dog, your intention was to alleviate its suffering and pain. Similarly, if your dog died as a result of an accident, remember that you did not intentionally let your dog run outside unattended. 
By choosing to remember that you did not actively intend to cause harm to your dog, you can help alleviate your feelings of guilt. [substeps] Remember that you made the best decision you could under the circumstances.