Casper was career changed, but he's still going back to Guide Dogs. He needs a medical evaluation, on account of his peanut size bladder and his excessive pooping. And, he takes forever to do his business.
His career change was more due to his inability to refocus after his attention gets caught by something, like a SQUIRREL. He seemed fine as a youngster, and he's okay with ferrets. If you let him see a rodent, however, getting his attention back is most difficult.
I'm totally in love with the Cas, but my family is not so much. So, chances are I won't be able to keep him as a pet. Maybe he can get a job as a professional pooper.