Finally, especially in the case of medical-response canines and those that serve handlers with invisible disabilities, it's not merely the necessity of the dog that's questioned but also the existance of the disability itself. And for these partnerships, some of the greatest problems arise.
Susannah Charleson, The Possibility Dogs: What a Handful of "Unadoptables" Taught Me About Service, Hope, and Healing
disability, dogs, invisible, questions