Inflatable rat
oversized inflatable figure of a rat, often used for labor protests

Scabby the Rat, otherwise known as inflatable rats or union rats, is a series of giant inflatables in the shape of cartoon rats, commonly used in the United States by protesting or striking trade unions. They serve as a sign of opposition against employers or nonunion contractors and are intended to call public attention to companies employing nonunion labor or engaging in union-busting activities.
History
The first known inflatable rat was used by the International Union of Operating Engineers Local 150 in Plainfield, Illinois in 1989, according to photos from the Local 150 Engineer in November 1989, which also launched a "Name the Rat" contest. In January 1990, it announced that "Scabby" was the winning submission, in reference to the slang "scab" for strikebreakers and non-striking workers, coming from Local 150 member Lou Mahieu. An alternative origin story credits the International Union of Bricklayers and Allied Craftworkers who credit Ken Lambert with the design in 1990 or 1991, a member of the Chicago District Council, and claim to still have the original model in their Chicago office storage.
The inflatable rats all originated from one American manufacturer, a company called Big Sky, who produced hot air balloons and standalone inflatables. It was commissioned by Lambert and designed by one of the co-owners, who Lambert asked to make the design to be "'meaner looking,' with big claws and 'festering nipples,'" with "menacing" fingers and whiskers and "more scabrous" belly. Other unions also began using inflatable rats in the 1990s to shame companies that employ nonunion labor. In part as a result of increasing business from unions, Big Sky’s sales doubled between 1990 and 1991, and developed other "union inflatables," such as a cockroach, a "Corporate Fat Cat", a "Greedy Pig". It was estimated that Big Sky at one point sold a half-dozen Scabbies per month at a price of up to $10,000 each.
Begin with the source’s own compact description: “Inflatable rat” is oversized inflatable figure of a rat, often used for labor protests. The dossier treats that line as a proposition to test through Inflatable, oversized and inflatable, not as a finished interpretation.
Why this record matters
The phrase “oversized inflatable figure of a rat, often used for labor protests” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated May 2, 2026. The linked authority identifier is Q6030140. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1989, 1990 and 1991.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Inflatable rat”, its source revision and the description used here.
- Expand the search: follow Inflatable rat primary sources, Inflatable rat archive and Inflatable research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Inflatable rat”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Inflatable rat” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.