At 14 months with the dog in front of you, you don’t need to ask so many questions. I would ask about health clearances, and overall temperament of the parents to see what to expect. I would ask about the training the dog has had,if it has had any x rays, any health issues, and what they are feeding. I would look at the dog’s, prey drive, food drive, how social they are with strangers(me), how interested they are in the handler they’ve been working with. What else you can look at would depend on your goals and what you want to do with the dog.