Where would human physiology be, if it were not illuminated by the bright irradiations of comparative physiology?
Brodie, after an exhaustive consideration of the facts, affirms that the mind of animals is essentially the same as that of man.

Every one familiar with the dog will admit that that creature knows right from wrong, and is conscious when he has committed a fault.

Many domestic animals have reasoning powers, and employ proper means for the attainment of ends.

How numerous are the anecdotes related of the intentional actions of the elephant and the ape! Nor is this apparent intelligence due to imitation, to their association with man, for wild animals that have no such relation exhibit similar properties.

In different species, the capacity and character greatly vary.