again are you sure you are adpoting from a breeder coz thats strange ,, as far as i know breeders usually dont give away their puppies for free unless they know them personally ,, but still answeeirng your question
1. how old is the dog ?
2. is it a pure breed ?
3. does the dog have documents ? ( kci papers)
5. is it trained?
6. what is the tempermant? ( low/medium/high)
7. any health problems ??
8. can i have vet check before taking the dog ?
9. can i return back the dog if he is very agressive ?
10.how is the dog with people and dogs ?
11. food and water intake ?
12. is it on any supplement ?