puppy4ever, i definately feel for you, you're in a very bad position. My friend had a dog like yours that had seizures, and after each was just a little different. I have owned a dog taken from the humane society and it turned out badly. In both cases the dogs had to be pd. Mine eventually did bite a child and broke the skin. I would not risk re-homing him, as he gave no warning of the attacks. I am really hoping that pitgrrl and 14+ are right and it is medically treatable. Its unfortunate sometimes with rescues that we don't know the dogs background. Our we always suspected there was some inbreeding involved.
from my home and do keep us posted. I for one will support whatever you have to do, for you, your child and the dog.