The Ass and the Lap-Dog explained simply

There was once a man who had an Ass and a Lap-dog. The Ass was housed in the stable with plenty of oats and hay to eat and was as well off as an ass could be. The little Dog was made a great pet of by his master, who fondled him and often let him lie in his lap; and if he went out to dinner, he would bring back a tit-bit or two to give him when he ran to meet him on his return. The Ass had, it is true, a good deal of work to do, carting or grinding the corn, or carrying the burdens of the farm: and ere long he became very jealous, contrasting his own life of labour with the ease and idleness of the Lap-dog. At last one day he broke his halter, and frisking into the house just as his master sat down to dinner, he pranced and capered about, mimicking the frolics of the little favourite, upsetting the table and smashing the crockery with his clumsy efforts. Not content with that, he even tried to jump on his master's lap, as he had so often seen the dog allowed to do. At that the servants, seeing the danger their master was in, belaboured the silly Ass with sticks and cudgels, and drove him back to his stable half dead with his beating. "Alas!" he cried, "all this I have brought on myself. Why could I not be satisfied with my natural and honourable position, without wishing to imitate the ridiculous antics of that useless little Lap-dog?"