I've come to the inevitable conclusion that Bok is a human being inside a dog suit.
Unlike many dogs he is extremely attentive, patient, and loving.
He's also something of a sports fanatic. He enjoys Hare coursing, Deer hunting, and Athletics. He's not over keen on ball games, but Monty is trying to encourage him.
He is contemplative, wiley, and sometimes devious.
If he was to reveal his real self, he would probably make a very good writer.
I was reminded recently of the Romany expression 'Kushti Bok'...... Kushti Bok indeed.