Who sleepeth with dogs shall rise with fleas.

Every ass thinks himself worthy to stand with the king’s horses.

An ape will be an ape, though clad in purple.

I hate the sight of monkeys; they remind me so of poor relations.

Animals are in possession of themselves; their soul is in possession of their body. But they have no right to their life, because they do not will it. 

Happiness is a warm puppy.

Animals are such agreeable friends—they ask no questions, they pass no criticisms.

Alas! We are ridiculous animals.

A dog starved at his master’s gate / Predicts the ruin of the state.

Imitate the ass in his love to his master.

Animals have these advantages over man: they never hear the clock strike, they die without any idea of death, they have no theologians to instruct them, their last moments are not disturbed by unwelcome and unpleasant ceremonies, their funerals cost them nothing, and no one starts lawsuits over their wills.