The Cave by José Saramago

I'm off to do men's work now, so this time you'll have to stay at home, Cipriano Algor told the dog, who had run after him when he saw him going over to the van. Obviously Found did not need to be told to get in, they just had to leave the van door open long enough for him to know that they would not immediately shoo him out again, but the real cause of his startled scamper toward the van, strange though this may seem, was that, in his doggy anxiety, he was afraid that they were about to leave him on his own. Marta, who had come out into the yard talking to her father and was walking with him to the van, was holding in her hand the envelope containing the drawings and the proposal, and although Found has no very clear idea what envelopes are or what purpose they serve, he knows from experience that people about to get into cars usually carry with them things which, generally speaking, they throw onto the back seat even before they themselves get in.

In the light of these experiences, one can see why Found's memory might lead him to assume that Marta was going to accompany her father on this new trip in the van. Although Found has been here only a few days, he has no doubt that his owners' house is his house, but his incipient sense of property does not yet authorize him to look around him and say, All this is mine. Besides, a dog, whatever his size, breed, or character, would never dare to utter such grossly possessive words, he would say at most, All this is ours, and even then, reverting to the particular case of these potters and their property, movables and immovables, the dog Found, even in ten years' time, will be incapable of thinking of himself as the third owner.