Cheryl, this is just a terrible story! First of all I'm so sorry for the loss of your mom. I lost my mama to cancer also and it's a painful ordeal for everyone. I can't imagine how angry you are at this man and his despicable behavior. And my heart breaks for those sweet babies in that situation. It's going to be very hard to do, but I hope you will be able to let go of this terrible anger eventually. Of course the anger is more than justified, but living with it everyday can make your life miserable and affect your health. I know you have siblings involved, so that complicates the situation. One can never know what they would do in another's situation, but I think I would try to negotiate for the dogs with money. That's obviously all he cares about. Maybe it's time to give up this fight and move forward. I so hope you can get those dogs--that just breaks my heart. As for the money and the stuff, it is only money and stuff, and not worth so much agony. I would also consider going to a counselor/psychologist to get some help with letting go of this anger, because it will be so tough to do.
It's so sad that so many families have trouble over money and possessions when someone dies. I know my family has had difficulties in this kind of situation and probably most families have too. Granted, most people don't have it as bad as you have. And what's so hard, is that you and your family are in the right. That is obvious to me and it's hard to believe that a court would find otherwise.
again, I'm so sorry this has happened to you and you family! Hugs to you and I hope things get better for you soon.