Hanzo just gives him a look, one that needs no words to expression how utterly ridiculous all of that sounds. When it doesn't appear that Jacob has any shame for his idiotic questions, the only response is a shake of his head and a grunt, as they near the entrance to the complex that both of them now reside within.

Mind-reading deer. Really?

It's not as though the deer possess the mental capacity to do anything with whatever they might glean. Imagine one listening in to whatever is rattling around in Jacob's head, for example.