my little sasha had a heart attack and stopped breathing i got the fluid out of her lungs gave her mouth to mouth and got her breathing again,she spent the night in the vets and was put on pills but sadly she had another one 2 weeks later and id already made my mine up to let her go as the vet said if she had another one they couldnt do anything for her and she would have to be put to sleep,she stopped breathing for 3 mins and i thought she had gone but started breathing again so i had to make the sad trip to the vet where she was pts,that was last july i lost my baby and her having the heart attack was the scaryist time of my life.whats the most scared you have been with your yorkie?it could be an illness or you lost them anything.