Ethos is the rhetorical element in which the persuasion of the audience falls as the major destination. The writer or the speaker attempts to persuade and audience through his piece of writing or speech respectively.
President Lincoln in his Second Inaugural Address questioned the divinity thought and highlighted the ills that the war has brought to the people. He expresses his dilemmatic thoughts as to what had made the divine, the God, to make his people involve in the war. He had used certain allusions from the holy Bible to persuade the audience. The causes that led to the war, it's outcome and it's end have been brought into light by Lincoln.
These ads clearly state the adoption is needed in that area for those dogs for specifically also they are advertising a cute dog so it is more persuasive so they can adapt to better the world