# tail wagging the dog

idiom

Source: https://englishreference.com/idiom/tail-wagging-the-dog
Updated: 2026-08-10

## Meaning

A minor or secondary part of something which is controlling or dominating the whole or the main part.

## Examples

- The small department is the tail wagging the dog in this company.
- We cannot let the software's tiny glitch be the tail wagging the dog.
- The tail wags the dog when a single customer controls the whole shop.
- When the interns start making all the major policy decisions, it is a clear case of the tail wagging the dog.
- The marketing budget is so huge that the tail is wagging the dog, forcing the engineers to build products they do not even like.
- If we change the entire wedding schedule just for one guest, the tail is wagging the dog and everyone else will be upset.
- The committee feared that allowing a vocal minority to dictate the entire agenda would result in the tail wagging the dog, ultimately undermining the organization's core mission.

## Origin

The expression originates in the 1858 play Our American Cousin. The shortened form, wag the dog, gained contemporary political currency following the release of the 1997 film Wag the Dog.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.