There are many ways in which you can continue the relationship.  Goodbyes don't need to be final. Saying goodbye to your foster dog can be difficult. You can grow attached to the foster dog, so saying goodbye to them can be tough. You can say goodbye to your foster dog. If you feel too emotional, take a deep breath and approach the situation.  Suppose you talk to the new foster parents of the dog and can schedule regular meets with the dogs. Then this could help you and your dog ease the process of settling into the new home.