Alyn, I know how hard it is to give up a pup. When I went to pick up Bonnie, we also took her sister Bella. Both are terrier crosses. Bella and Bobbie both have separaton anxiety, Bella's got so bad that she was tearing up floors and getting into things all the time. We finally had to make the decision to give her away. We found a small family to take her, the mother was home al the time and fell in love with her. It was so hard to let her go. Bobbie fell into a depression for awhile until we got Chester, she is fine as long as he is with her. You have such a big heart. I have considered volunteering at the Humane Society but feel that it would be far to hard on me, I get far to attached to fast. Hope you feel better, and remember you did the right thing.