Answer: It emphasizes Agamemnon's greed and cowardice.
Step-by-step explanation:
The effect of the phrase "with the eyes of a dog and the heart of a deer" has on the meaning of the excerpt from "The Quarrel" emphasizes the greed and cowardice of Agamemnon.
The speaker stated that Agamemnon was never fighting in the front of the battle. This explains that he was a coward. Also, the fact that he'll go round to rob the prizes from any man who stands up to him shows that he was greedy as well.