All the training that the dog is receiving from a specialized person is to help disabled people in the future.
There is a non-profit organization that offers to train them and then offer them to people who heed their assistance for free. How amazing is that…
Making the caricature part of their training it shows them how prepared the dog is. If he is able to stay still and be patient despite the many distractions around him than he he ready to take help others.