The Wolf and the Lamb is a well known fable of Aesop and is numbered 155 in the Perry Index. There are several variant stories of tyrannical injustice in which a victim is falsely accused and killed despite a reasonable defence.
A wolf comes upon a lamb and, in order to justify taking its life, accuses it of various misdemeanours, all of which the lamb proves to be impossible. Losing patience, the wolf says the offences must have been committed by someone else in the family and that it does not propose to delay its meal by enquiring any further. The morals drawn are that the tyrant can always find an excuse for his tyranny, and that the unjust will not listen to the reasoning of the innocent. The tale was included with scarcely any changes in the fable collections of Jean de la Fontaine (I.10) and Ivan Krylov.
A variant story attributed to Aesop exists in Greek sources. This is the fable of the cock and the cat, which is separately numbered 16 in the Perry Index. Seeking a reasonable pretext to kill the cock, the cat accuses it of waking people early in the morning and then of incest with its sisters and daughters. In both cases the cock answers that humanity benefits by its activities. But the cat ends the argument by remarking that it is now her breakfast time and "Cats don't live on dialogues". Underlying both these fables is a Latin proverb, variously expressed, that "an empty belly has no ears" or, as the Spanish equivalent has it, "Lobo hambriento no tiene asiento" (a hungry wolf doesn't hang about).
The fable also has Eastern analogues. One of these is the Buddhist Dipi Jataka in which the protagonists are a panther and a goat. The goat has strayed into the presence of a panther and tries to avert its fate by greeting the predator politely. It is accused of treading on his tail and then of scaring off his prey, for which crime it is made to substitute. A similar story involving birds is found among Bidpai's Persian fables as "The Partridge and the Hawk". The unjust accusation there is that the partridge is taking up all the shade, leaving the hawk out in the hot sun. When the partridge points out that it is midnight, it is killed by the hawk for contradicting.
Down the centuries, interpreters of the fable have applied it to injustices prevalent in their own times. The 15th-century Moral Fables by Scottish poet Robert Henryson depict widespread social breakdown. The Lamb appeals to natural law, to Scripture, and to statutory law, and is answered by the Wolf with perversions of all these. Then Henryson in his own person comments that there are three kinds of contemporary wolves who oppress the poor: dishonest lawyers; landowners intent on extending their estates; and aristocrats who exploit their tenants.