Oh My God! What have I done?

Last Saturday I drove to Phoenix to celebrate Independence Day with my babies. Michael is three now and so much fun. We had a wonderful visit, however, I came home with more than I left with.....72.5 pounds of dog. Her name is Maggie Mae, she's almost 11 months old, and she promptly barfed up her dinner on my bedroom carpet last night. Have I lost my mind?