I am sorry to hear that you are having these problems getting your dog back.
There are a couple of things that come to mind. First, how do you prove that he is your dog? Does he have a microchip? If not, you may have trouble proving he is yours.
You can sue the rescue league for return of your property, but they legally got him from the pound, so your chances are slim and this would take months and months.
I would imagine the reason they will not adopt him back to you is because of you going on vacation and not having him in a kennel or with someone else. If you had him in the back yard with no one to check on him, that could be animal cruelty or worse. So be careful in getting too aggressive with them.
This is a thought, if it were me, I would find a friend who would qualify for adoption to take him. This way he is at least where I would know that he is safe and I could 'visit'. Of course, if he follows me home.....
I would not go with my friend to pick out her new puppy.
Good luck and Godspeed.
Have I satisfactorily addressed your concerns? If not, then please feel free to ask for clarification.
If the information that I provided was helpful, then please remember to click the green accept button so that I will receive credit and compensation for my time. Positive feedback is always appreciated as well. Thank you and good luck!
DISCLAIMER: Please understand that the complexities of most legal problems cannot be adequately addressed in this setting, and that I am only licensed to practice law in the states of Florida and Mississippi. Accordingly, you acknowledge (1) that we have not formed an attorney-client relationship, and (2) that my post is general information only and not specific legal advice.
Please remember that we have not created an attorney-client relationship, and that my post is not intended to be specific legal advice. The answers given are limited to the information you have provided in your post. For specific legal advice, please consult with an attorney licensed in your state.