ok so a couple of things:
-could we get a pic or drawing of something to reference on what our character are visually looking at? I'm.assuming the prototype of big dog is the same concept found on youtube (a four legged automated pack mule designed for the millitary 10 years ago) id put up a link from youtube but I'm on moblile and it won't work.

-if our character asks physical dimensions of the prototype and questions on the inventors phsyce, would he be able to answer?

-how big is this mans mustache? Lol