The DOG to his vomit and the swine (sow) to his (her) mire

Meaning & Analysis

A dog will return to eat its own vomit, and a pig, even after being washed, will go back to wallowing in the mud. These are instinctual, albeit repulsive, animal behaviors.

Insights

Relapse into Vice

The proverb is a powerful metaphor for moral or spiritual relapse. It describes individuals who, after a period of repentance or reform, inevitably return to their old, sinful, or corrupt habits.

Inherent Nature Overcoming Reform

It suggests that a person's fundamental character or nature is unchangeable. External attempts to clean or reform someone (washing the sow) are futile if their underlying disposition remains inclined toward corruption (the mire).

Futility of Superficial Change

The proverb warns against the futility of superficial changes. 'Washing' the sow does not alter its essential nature. This implies that true transformation requires a deep, internal change, without which any external improvements are temporary and meaningless.

Biblical Authority and Moral Weight

The proverb's authority is rooted in its biblical origin (2 Peter 2:22), which frames relapse not merely as a weakness but as a significant moral and spiritual failure. Its quotation by Shakespeare in French signifies its widespread recognition among the educated classes in post-Reformation Europe.

Psychological Determinism

This proverb reflects a deeply pessimistic or deterministic view of human nature, suggesting that individuals are inherently bound to their base instincts. It implies that attempts at reform are often superficial and that true, lasting change is exceptionally difficult, if not impossible.

A Tool of Social Condemnation

The powerful, repulsive imagery of 'vomit' and 'mire' is not accidental; it is intended to evoke disgust and contempt. The proverb functions as a tool of social judgment, used to condemn those who revert to behaviors deemed immoral or unclean.

Symbolism of Unclean Animals

The animals themselves are symbolic. The dog's unnatural act of returning to its vomit and the sow's return to filth despite being washed serve as potent symbols for humanity's struggle with its own perceived unclean or sinful nature.

Rhetorical Devices

Parallelism

The proverb is built on a balanced, parallel structure ('The dog to his vomit' and 'the swine to his mire'), which creates a memorable rhythm and reinforces the connection between the two parallel actions.

Visceral Imagery

The use of 'vomit' and 'mire' creates strong, visceral images of filth and revulsion. This powerful imagery is designed to provoke a strong negative emotional response, underscoring the moral disgust associated with the relapse.

Biblical Allusion

The entire expression is a direct allusion to a well-known passage in the New Testament. This biblical reference lends it a powerful sense of authority and a deep layer of theological meaning concerning sin and apostasy.

relapsecorruptionnaturefutilitybiblicaljudgment
Analyzed with gemini-2.5-pro on July 7, 2025

Transcription

Quotations

It is very necessary that we . . neuer after . . fall and tourne agayne to synne lyke a dogge that tourneth agayne to his vomyle, or a sowe ones waltred in the cley wyll retourne to that fylthy place.

1508, J. FISHER, Sayings David in Psalms, p. 85

Like swine to the mire, [they] returne to their filthinesse.

1580, BARET, S, S-1142

We shall see the dogg returne to his vomit, and the clensed sow to her myre.

c.1580, LODGE, Reply to Gosson, p. 32
1585, E. SANDYS, Serm. 7, p. 140

Let the dog turn to the vomit, and the swine to the wallow.

1595, H. SMITH, Jacob's Ladder, Wks., II 92

A dogge to his vomit, and a sow to her wallowing in the mire.

1616, DR., no. 543

Bible Citations

According to the true proverb, The dog is turned to his own vomit again; and, The sow that was washed to her wallowing in the mire.

— The Bible, 2Pet ii:22

Shakespeare Citations

‘Le chien est retourné à son propre vomissement, et la truie lavée au bourbier.’

H5, III.vii

Cross References

Original Scan

The DOG to his vomit and the swine (sow) to his (her) mire - a scanned entry from Tilley's 1950 Dictionary of Proverbs.
Scan courtesy of HathiTrust Digital Library.
Used under CC BY-NC 3.0.

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Last updated: January 27, 2026