You need get as many Spanish on your side with letters to the judge.
1. From A Spanish AA Member., Spanish Sponsor. The more the better showing your progress.
2. From the local Spanish vet saying that dog has been inspected and is in fact ok, so there must be a little exaggeration.
3. From A Spanish Doctor saying you are in recovery and receiving treatment and counselling.
4. A few Spanish to wright of your normal good character
5. The most expensive and well known to the judge, legal expert team
6. Your old Spanish employer , good character again.
7. Priest, respected view, letter. Asked for God's forgiveness etc
This may well cost you many thousands of Euro, and perhaps lots of Spanish might want a little consideration for their trouble, Doctors fees, Psychiatrist fees, a donation to the church, who knows, their attendance in Court even to speak personally of your progress, but I think you can not take the risk. Spend every penny if you have to.