Their nose! Anything you bring in the house has to be sniffed, top to bottom. Sat in a chair for a haircut? Sniff, sniff, sniff. A workman in the house while the dog was out? Nose to the ground, follows his path through the house. Same in the backyard. Book from the library...does not matter. That nose is something else.
They are considerate , for example i chill on the couch,my phone near me,Odin wants to sit near me but he stares at me till i move my phone,so he doesn't sit on it,and in case i don't move it,he climbs so careful not to sit on it