"The intelligence displayed by many dumb animals approaches so closely to human intelligence that it is a mystery. The animals see and hear and love and fear and suffer. They use their organs far more faithfully than many human beings use theirs. They manifest sympathy and tenderness toward their companions in suffering. Many animals show an affection for those who have charge of them, far superior to the affection shown by some of the human race. They form attachments for man which are not broken without great suffering to them."