We brought home an 11 month old rescued American Bulldog mix a little over a week ago. Initially she was terrible on the leash and pulled like mad....we worked every day and began to see great improvements but now......wait for it...... She doesn't want to walk. She will literally lay down in the mididle of the road, on people's lawns and will not budge. This is a dog that we were told had crazy energy. We've worked in play time to keep it interesting with fetch in the year which she has plenty of energy for, taken her to new neighborhoods and the park which works for a short while. But yet again, she just decides she doesn't want to go any more..she had just seen a vet before we for her and had a clean bill of health. No visible injuries and we've rubbed down her legs and feet to see if there was any discomfort and she is fine. Is she trying to be dominate and if so what do we do? If we don't force her to walk and excercise outside she's bouncing off the wall inside. Help!