Meb he's adorable. Don't worry about his anxiety right now. The second BMD I picked up was a whirling dervish of nerves. She has now figured out that she can relax and nap with the other dogs. She is still very velcro but has made leaps and bounds in only a few days.
Bless you for taking him in. He's got such a lovable mushy face. Enjoy fostering. It's lots of fun!
"For every animal that dies in a shelter, there is someone somewhere responsible for its death".