The brains of rats are evolving, as though they made an unexpected step across a line between Eden and East of Eden, as though the Chinese horoscope Rat decided to rear its head and elevate its kingdom, as though the archetype of Rat in mythology and folk tales and contemporary literature and art were suddenly obsessed with giving life to itself.

Rats are now capable of reason, deductive thinking, inference, attempting to bargain and negotiate, recognition, and discrimination.