The noblest of beings in outward appearance is man, and the most abject of creatures is the dog, and according to the consensus of wise men, a grateful dog is better than an ungrateful man.

A dog never forgets a morsel [of food],

Even if you throw stones at it a hundred times.

And if you cherish a base person for a lifetime,

With the slightest harshness, he will become your enemy.