It is interesting that Kino becomes more like an animal after he finds the Pearl of the World and must defend it against society and its cupidity. The greed of the pearl merchants and their desire for this great pearl send Kino whirling into an animal state as the Song of Evil is heard by him,
...the music of the enemy, of any foe of the family, a savage, secret, dangerous melody, and underneath, the Song of the Family cried plaintively.
Here are four examples of Kino's being animalistic:
1. CAT: In Chapter III as thieves come to his home to steal the pearl, Kino reaches into his shirt for his knife and then springs "like an angry cat," leaping and striking and "spitting for the dark thing" that is at the corner of his home.
2. SNAKE: In Chapter IV, Juana tries to take the pearl and throw it back into the sea, but Kino sees her and tracks her like an animal in his rage. After he strikes and kicks her, Kino looks at her "and his teeth were bared. He hissed at her like a snake."
3. ANIMAL/HORSES: In Chapter VI as the hunters crawl over the ground like animals, Kino listens, "an animal light in his eyes." Then, as Kino and Juana flee, the "trotted" like the horses following them.
And Kino ran for the high place, as nearly all animals do when they are pursued.
4. LIZARD: In Chapter Vi, also, as the family rests in the night, "Kino edged like a slow lizard down the smooth rock shoulder."