What kind of doggie day care is it? How big is it? I've seen some that were so small, I wonder how they accomadate larger high energy dogs. GSDs, Vizulas, GSPs, Labs...etc.
Do they do crate rotation? That means the place is small so when the large dogs come out they pull the small dogs and crate or kennel them; and visa versa.
Off hand, I'd try and get a chuck it, a ball, and a fenced area and run that dog. I'd also be doing some serious training to work the brain.
Whining, I don't have that from my GSD, but do with the JRT X. My iPod shuffle is my best friend.
While you are ignoring the whining, put a book or magazine in front of your face. That breaks the attempt on your eye contact, GSDs are famous for circling around in front of you when you turn your back on them.
Gunny GSD & Zoey the Weasel
Sean M. Walsh K-9 Memorial Fund
our goal is to help police agencies establish and maintain a canine team in memory of Sean